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.

As soon as he arrived at the airport, he called home.

A. No sooner had he arrived at the airport than he called home.

B. He arrived at the airport sooner than he had expected.

C. Calling home, he said that he had arrived the airport.

D. Immediately after he called home, he arrived the airport.