F: Another cup of coffee? That's your fourth since lunch. You must be really thirsty. ,M: Well, I stayed up very late last night preparing for my paper. I just wanted to keep myself awake.
(A) F: So you are sleepy because you played games last night. (B) F: So you drink so much coffee because you are sleepy. (C) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) F: You are  addicted to tea.
B