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: Let's meet at 20 to 5. ,F: Well, could we make it 20 past 5? ,M: That's a bit late for me. I could manage 10 past. ,F: OK, see you then.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: That would be great. Make it 5:10. (C) M: Since you want 10 past 5, let's meet then. (D) M: Sure, 5:40 is ok.

Ex Output:
B


Ex Input:
F: Ladies and gentlemen, we are flying to San Francisco. ,M: Excuse me, Miss. ,F: Yes, sir. What's wrong? ,M: It's terrible. ,F: Are you feeling airsick? ,M: No. I've just realized I don't have my travel bag with me. ,F: Don't worry sir. Can you tell me what your bag is like? ,M: A small blue one made of leather with my name and address on it, a Brown basketball toy tide to the belt and my black wallet inside it. ,F: Can you remember where you last saw it? ,M: Let me see. Oh I must have left it by your airline counter at the airport when I registered my luggage.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: Don't worry sir. I'll contact the staff from the hotel to get your bag back. (C) F: So you didn't leave your name or address on the bag, did you? (D) F: You left your bag at the airport? Don't worry. I'll contact the workers there.

Ex Output:
D


Ex Input:
M: How much do I need to pay? ,F: Let me see. Um, $9 and $8. That's $17, sir. ,M: OK, here is a $20 bill.
(A) F: Thank you. Here's you change, $7. (B) F: You need pay $3 more. (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: Why did you pay $9?

Ex Output:

C