Given the task definition and input, reply with output. In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.

M: It seems you are very busy today. ,F: Yes, I want to take part in a writing competition next week. I need to write a composition of about 1000 words. But before writing, I need to search for a lot of material.
(A) M: The writing competition is tomorrow? Good luck! (B) M: You can recite the composition in the library, it's quiet there. (C) M: A paper of 2000 words? Then it seems you need to collect a lot of material. (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.
D