F: May I leave before 11? I have something to buy for the office. ,M: But you have to hand in your work plan first.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: Alright. I'll hand in as soon as possible, because I must go to buy the things before 9. (C) F: OK, and then I'll go to buy the things before 11. (D) F: OK. But I must leave before 11 no matter whether I could hand in my work plan or not, because I must go home on time.
C