comparing two lists

[Siylo]

I do want the indexes, at the end I'm trying to print out a list of the incorrectly answered questions so question 1 == index 0.

def main():
    # Constant of correct test answers.
    CORRECT_ANSWERS = ["A", "C", "A", "A", "D",
                       "B", "C", "A", "C", "B",
                       "A", "D", "C", "A", "D",
                       "C", "B", "B", "D", "A"]

    # filling a list with every line, stripped of the \n, from the opened file
    student_answers = [line.strip('\n') for line in open('test.txt', 'r')]

    student_correct = 0
    incorrect_num = [(index + 1) if CORRECT_ANSWERS[index] != student_answers[index] else
                     (student_correct + 1) for index in range(len(CORRECT_ANSWERS))]

    print(incorrect_num)
    print(student_correct)

main()

now my output is

Output:
[1, 1, 1, 1, 5, 1, 7, 1, 1, 10, 1, 1, 1, 1, 15, 1, 1, 1, 1, 20]
0

The list of incorrectly answered questions should be [1,5,7,10,15,20] and 14 should be the student_correct value.