F: Why is Bob so tired? ,M: He stayed up to study for his exam. I told him many times to prepare earlier but he didn't listen.
(A) F: Since you advised Bob to prepare earlier and he took your advice, why is he still tired? (B) F: You've advised Bob to prepare earlier. That's very kind of you. (C) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) F: Do you suggest that Bob shouldn't stay up? But he is not tired now.
B