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:
F: Congratulations on your new job. I know you worked hard for it, cheers. ,M: Cheers, it has been a pleasure working with you all these years. I'll make sure to come back and visit next month. ,F: You'd better. Work won't be the same without you. So when do you start? ,M: I went in today to fill out some paperwork but I won't start until the following Monday.
(A) F: You are starting tomorrow? That's real quick. (B) F: Excuse me, could you repeat the question? (C) F: Oh, you will start tomorrow instead of next week. (D) F: You will start next month? What are you going to do these days?

Ex Output:
B


Ex Input:
M: Did you hear the news? Reports say that drinking beer is good for your health. I really shouldn't have given it up. ,F: Come on, Peter. You are healthy as well without it.
(A) M: I used to be in poor health because of the beer. (B) M: I didn’t hear you. Please could you tell me again? (C) M: I didn't give up drinking beer so I am in poor health now. (D) M: I used to be a beer drinker, but now I give it up and I am in poor health.

Ex Output:
B


Ex Input:
F: International Travel Agency, may I help you? ,M: Yes, my wife and I want to take a holiday this winter, to someplace warmer. ,F: I understand. How long do you want to take? ,M: Only a week between Christmas and New Year. That's the problem, you see.
(A) F: There is no problem. Seven days of winter vacation, is that so? (B) F: There is no problem. Seven days of summer vacation, is that so? (C) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) F: There is no problem. Fourteen days of summer vacation, is that so?

Ex Output:

A