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 survived the operation thanks to the skillful surgeon.
A.He wouldn't have survived the operation without the skillful surgeon.
B.Though the surgeon was skillful, he couldn't survive the operation.
C.He survived because he was a skillful surgeon.
D.There was no skillful surgeon, so he died.