David offered his help. No one else did.

Câu hỏi: 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.
David offered his help. No one else did.
A. David was the one person to offer his help.
B. David was the only person to offer his help.
C. David only was the person to offer his help.
D. David was the only person to offered his help.