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.
It was overeating that caused his heart attack.
A. But for his overeating, he wouldn't have had a heart attack.
B. But for his overeating, he wouldn't have a heart attack.
C. If it wasn't his overeating, he wouldn't have had a heart attack.
D. Had he had overeating, he wouldn't have had a heart attack.
Đáp án A.