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: Can I help you Madam? ,F: Yes, thank you. I seem to have lost my room key. ,M: Take it easy. You can go to the front desk to get the spare one.
(A) F: Thank you. I'll go to the front desk and get the spare key right now. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Okay, I won't leave the office until you give me the spare car keys. (D) F: Thank you so much for helping me check in.

Ex Output:
A


Ex Input:
M: Can I have my bill, please? ,F: Yes, one moment, please. ,M: Do you take credit cards? ,F: Sorry, we don't accept checks, either. You have to pay in cash.
(A) M: OK. I'll pay by credit card. (B) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) M: Fine. I will pay by cash. (D) M: You don't accept cash? How about credit card?

Ex Output:
C


Ex Input:
F: Excuse me? ,M: Yes. ,F: Is there a lady's room around here? ,M: There is, but unlucky for you. It has a big out of use sign on it.
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: I can't understand why I have to sign up for using the lady's room when there isn't one. (C) F: You mean there is no lady's room so I can't use it immediately. (D) F: I'm really sad that I'm not able to use the lady's room right now.

Ex Output:

D