
Passage: In the Novel "catch-22" by the American writer Joseph Heller,catch-22 stipulates that only if a soldier is mentally abnormal and he or she applies to stop flying, he or she can be allowed to stop flying. According to common sense, if a soldier is aware of the danger of flying and applies to stop flying, it shows that he is clear-headed and his mind cannot be abnormal.
Question: Which of the following options is the logical inference above?
A. A.If a person is mentally abnormal, he will be allowed to stop flying.
B. B.No one can be allowed to stop flying.
C. C.If a person is aware of the danger of flying, it shows that he is mentally normal.
D. D.If a person can apply to stop flying, it shows that his mind cannot be abnormal.
Answer: