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.

F: Excuse me, Sir. Can you help me change to another room? When I booked the room, I didn't realize it's next to the elevator. It's too noisy. ,M: Sorry, Miss, all of our rooms have been booked or occupied already.
(A) F: Do you like watching this movie? (B) F: Since there is a spare room, please change it for me. (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: There are so many people in this shopping mall.
Output:
C