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: Hello, I want to ask you how to draw money. ,F: There is quite a long line in front of the bank windows. Please use this machine.
(A) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) M: Since there are few people in the bank, I'll just wait in front of the windows. (C) M: I need to go to the bank after we have meals in this nice restaurant. (D) M: I need to go to the bank after we check out in the hotel.

Ex Output:
A


Ex Input:
M: You only have an hour for lunch. ,F: Well, now I have only 45 minutes. ,M: That's not much time. Where should we go? How about Tornis Ettling Restaurant? Just across the street. I love the pizza. ,F: I love the food too, but they are really slow. Last week, I waited 30 minutes for my food. ,M: OK. Let's have a sushi at the David's. We can be in and out in 20 minutes. ,F: Today is the Thursday, David's is not open.
(A) M: Oh, yes. It is usually crowded on Thursday. (B) M: I didn’t hear you. Please could you tell me again? (C) M: Oh, yes. It is usually closed on Friday. (D) M: Yes, it is really far and crowded today.

Ex Output:
B


Ex Input:
F: Excuse me. Where is the nearest post office? I need to mail a package before my lunch break ends. ,M: If you make a left at the end of the block, it's a large Gray building. But Unfortunately, it's closed today, because it's Memorial Day.
(A) F: Please be more specific. I can't find the right direction. (B) F: All the staff in the post office got sick today so it isn't open today. (C) F: I have to rush to the airport. I don't have time to mail the package. (D) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?

Ex Output:

D