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: York Hotel, can I help you? ,M: Yes, I'd like to book a room for 3 nights. ,F: When will you be arriving? ,M: We'll arrive the day after tomorrow. That's July twntieth. ,F: Yes, sir. Single or double? ,M: One double room. ,F: Alright. One double room until the twenty-third. ,M: How much will that be? ,F: $130 a night, including breakfast. ,M: That'll be fine.
(A) F: OK. A single room for you until the 25th. (B) F: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (C) F: I'll book a double room for you, Mister...? (D) F: So two single rooms for you from the 21st.
Output:
C