Mark the letter A, B, C or D on...

Câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
A: “I’m very sorry for letting you wait for so long.” – B: “ _______”

A. Don’t apologize. I’ve just arrived here.

B. It doesn’t matter. Thank you.

C. You’ve welcome.

D. My pleasure. Don’t worry about it.