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.

Ex Input:
M: We'd like 2 rooms, a small room and a large room, both facing the garden. ,F: Very good sir, the small room is $20 a night, and the large room is $30 a night.
(A) M: So I have to pay $50 a night. (B) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (C) M: I only need a large room, so I need to pay $20 a night, right? (D) M: I only need a small room, but I need to pay $50 a night, right?

Ex Output:
A

Ex Input:
M: Could you please turn down the CD a little, Julia? Our son is sleeping. ,F: Sorry, dear. I didn't know.
(A) M: It's OK, my dear daughter, now you need to finish your homework. (B) M: It doesn't matter honey. Our sleeping son is so cute,right? (C) M: Don't worry, our son is listening the pop music. (D) M: I'm sorry, I didn't catch that. Would you mind speaking more slowly?

Ex Output:
B

Ex Input:
F: Excuse me, do you know where the Admiral Hotel is? ,M: I can't say that I do. Why don't you walk over and ask that taxi driver. He should know.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Okay. You mean I should walk to the hotel and ask that truck driver? (C) F: So, you mean I should ask someone else for help. (D) F: OK, I see. You mean that taxi driver should not know and I should ask someone else for help.

Ex Output:
C