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'd like to reserve a table for 6:00 tonight. ,F: Is there any place you would prefer to sit in? We do have a smoking section. ,M: Oh, would it be possible to reserve a table next to the window?
(A) F: Two men are arguing in the smoking section over there. I'd like join them. (B) F: I didn’t hear you. Please could you tell me again? (C) F: You sat too far from the window to see that there was an accident outside. (D) F: Sorry, all the tables near the window are booked up.

Ex Output:
D


Ex Input:
M: Did your teacher give a task for Monday? ,F: There is nothing to read in the textbook, but we have to see a movie and write a short report about it.
(A) M: Let's continue talking about the task. (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: Now that your teacher didn't give you any task for Monday, why should we continue to talk about this task? (D) M: You need to write a long paper about the movie? That's terrible.

Ex Output:
A


Ex Input:
F: Hi, Tom. What are you doing here? ,M: I'm waiting here to buy a train ticket to Chicago. You see, there are so many people waiting here. It seems that I will have to wait for 3 hours.
(A) F: I do hope that you can get your train ticket to Chicago three hours later. (B) F: Two hours is not a long time for waiting for a train ticket to New York. (C) F: Six hours is a long time for waiting for a train ticket to New York. (D) F: I’m sorry, I don’t understand. Could you say it again?

Ex Output:

A