Mark the letter A, B, C, or D on your answer sheet...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

In 1962 the American Telephone and Telegraph Company launched telstar,________communications satellite to transmit telephone and television signals.

A. it was a first

B. that was the first

C. first it was a

D. the first