John was lazy. He failed the driving test.

Câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
John was lazy. He failed the driving test.
A. If John had not been lazy, he would not have failed the driving test.
B. If John had not been lazy, he would have failed the driving test.
C. John was lazy because he failed the driving test.
D. John was lazy as failed the driving test.