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: International Film Club. ,F: Hello, I'd like some information about the club, please? ,M: Certainly, first of all, you must be over 15. Is that OK? ,F: Yes, that's fine. I'm 16, are you open on Sunday. ,M: I'm sorry, we aren't. When we started we opened from Tuesday to Friday, but now we open from Monday to Saturday. We get more people now.
(A) F: So we can not go there on Sunday because it is closed. (B) F: You mean the club open on Sunday now. (C) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) F: It is a pity that the club is closed on Monday.

Ex Output:
A


Ex Input:
F: Was yesterday's meeting held in room 305? ,M: 305 was occupied and the computer in 306 was out of order, so we moved to 307.
(A) F: Since the computer in room 305 was out of order, why was the meeting held in room 305? (B) F: Since room 306 was occupied, why was the meeting still held in room 306? (C) F: Because room 306 is occupied, the meeting was held in room 307, right? (D) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please?

Ex Output:
D


Ex Input:
F: Hi, I'd like to check out these books. ,M: No problem, ma'am. I can help you with that. But Unfortunately you won't be able to borrow all of these today. We have a 10-book limit.
(A) F: I want to buy this book. (B) F: I didn’t hear you. Please could you tell me again? (C) F: Excellent! I can borrow more than 10 books. Thanks. (D) F: What a pity. I'd like to borrow these books when I finish the books I have.

Ex Output:

D