You will be given a definition of a task first, then some input of the task.
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: Excuse me, I'm a new student here, the campus is very big, I'm lost. ,F: Where do you want to go? ,M: I want to find where the school library is. ,F: OK, go down this street and turn right at the second corner. Go along until you see a gray building, that's it. ,M: That sounds hard to find. ,F: Actually, it is very easy. The library is just between the post office and the red main teaching building. ,M: That sounds much easier.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: Hope you can find the library. A red one near the gray main building. (C) F: I believe you can find the library now. Remember it's a gray building. (D) F: Remember, the teaching building you want to go is far from library.
Output:
C