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.The fire was brought under control thanks to the night watchman.
A.The night-watchman must have caused the fire which was brought under control.
B.But for the night-watchman, the fire would have been brought under control.
C.It the night-watchman had not appeared, the fire would have been brought under control.
D.If it had not been for the night-watchman, the fire would not have been brought under control.