Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
He doesn’t study hard, so he can fail the exam.
A. If he studies hard, he won’t fail the exam
B. If ha didn’t study hard, he wouldn’t fail the exam
C. If he studied hard, he wouldn’t fail the exam
D. If he hadn’t studied hard, he wouldn’t have failed the exam