M: I need to use the restroom, but the door is locked. No one is in there because I already knocked on the door. Can you give me the key? ,F: Well, the restroom is for customers only. You'll need to buy something before I can give it to you.
(A) M: Excuse me, could you repeat the question? (B) M: I don't want to buy anything because I'm already in the restroom. (C) M: Okay, I'm gonna buy something right now and come back for your keys. (D) M: Don't worry. I'll find the key to open the conference room.
C