선택지별 정답률을 구하여 비율이 맞지 않을 경우 비율이 작은 선택지의 번호를 정답으로 지정한후
나머지 선택지에 대하여 난수 발생할려고 합니다

예)
A,B,C,D,E 라는 사람이 1번 문제를 푸는데, 문제는 다 같지만
답보기 문항이 틀립니다.
A이라는 사람은 답이 1번, B라는 사람은 답이 2번 이런 식으로 해서
문제를 다 풀었을 때 정답율을 같게 하려면 어떻게 해야 할까요.
문제)우리는 어떻게 살아야 할까요.
1) 잘산다 2)대충  3) 보통 4) 적게 5) 모름
이라는 문제가 있을 때 정답은 1번입니다.
1- 잘산다, 2-대충 3-보통, 4-적게, 5-모름 에 코드를 주어서
다른사람이 문제를 풀때는    
1) 2-대충 2)3-보통 3)4-적게  4)5-모름  5)1-잘산다
       이렇게 답문항을 틀리게 해서 정답을 서로 틀리게 하는 겁니다.    
        
이런식으로 문제를 풀어서 정답률을 같게 하려면 어떻게 해야하나요.
                                                                        
문제        1)        2)        3)        4)        5)        정답                                
1        1        3        4        5        2        1                                
2        1        2        4        3        5        1                                
3        1        2        3        4        5        1                                
4        3        4        1        2        5        3                                
5        2        1        3        4        5        2                                
6        1        4        2        3        5        1                                
7        1        3        4        5        2        1                                
8        5        4        1        2        3        3                                
9        3        1        4        5        2        2                                
10        4        3        5        1        2        4                                
11        1        2        4        3        5        1                                
12        2        3        4        5        1        5                                
13        3        1        4        2        5        2                                
14        1        2        3        4        5        1                                
15        1        5        4        2        3        1                                
16        1        2        3        5        4        1                                
17        5        3        1        2        4        3                                
18        4        1        5        2        3        2                                
19        4        5        2        1        3        4                                
20        1        5        3        2        4        1                                


현재 이렇게 나열된 부분을  다시 재정리 할려고 합니다

여기서는 번호와 상관없이  1번부터5번까지 각각 답이 4개씩
나와야 됩니다

정답이 많은 부분은 적은 숫자에 난수발생 시켜서 문제 및 내용을
바꿀려고 합니다






결과물

문제        1)        2)        3)        4)        5)        정답
1        2        3        4        5        1        5                                
2        3        2        4        1        5        4                                
3        1        2        3        4        5        1                                
4        3        4        1        2        5        3                                
5        2        1        3        4        5        2                                
6        5        4        2        3        1        5                                
7        1        3        4        5        2        1                                
8        5        4        1        2        3        3                                
9        3        1        4        5        2        2                                
10        4        3        5        1        2        4                                
11        1        2        4        3        5        1                                
12        2        3        4        5        1        5                                
13        3        1        4        2        5        2                                
14        4        2        3        1        5        4                                
15        1        5        4        2        3        1                                
16        4        2        3        5        1        5                                
17        5        3        1        2        4        3                                
18        4        1        5        2        3        2                                
19        4        5        2        1        3        4                                
20        3        5        1        2        4        3                                

도움을 요청합니다.