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.

Input: Consider Input: F: Excuse me, Mr. Smith. I was wondering if you could do something about my neighbor's dog. It's been barking and keeping me up all night. ,M: OK. I'll call your neighbor on the phone.
(A) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) F: Thank you! I hope I can sleep well tonight. (C) F: Thank you! My dog didn't feel well and barked all night! (D) F: Thank you for calling him. I guess I should make a apologize to my neighbor.

Output: B


Input: Consider Input: M: Hi, Helen, I saw you yesterday with a lovely little girl at the market. Your daughter? ,F: No, she's my sister's daughter, she's just visiting and will be staying with us for a couple of days.
(A) M: Oh, that's your niece then, she's really cute. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: Your niece is so cute, I didn't know your brother had a daughter. (D) M: Your daughter looks a lot like you.

Output: A


Input: Consider Input: F: Excuse me, could you tell me where physics 403 is? Has it been moved? ,M: OK. Let me check on the computer. Err I'm sorry, but it says here that the class was cancelled. You should have got a notice letter about this. ,F: What? I never got it. ,M: Are you sure? It says on the computer that the letter was sent out to the students a week ago. ,F: Really? I should have got it by now. I wonder if I threw it away with all the junk mail by mistake.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: Well, the notice letter has been sent out a fortnight ago. You'd better check again. (C) M: Do you know that the letter has been sent out a week ago? Why don't you check again? (D) M: Do you know that the letter has been sent out a week ago? Physics was change to another classroom.


Output: C