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: So Alice, when do you begin? ,F: I start on the twenty-first. I'm hoping to hurry to the coast before I'm too busy. ,M: I don't blame you, you're going to be working long hours, and should get a little rest before it all starts. ,F: We don't actually start working on the first day, but there's going to be some hard training. All new volunteers are required to complete 10 days of training, so I do want to get a little play time before that.
(A) M: So, you think the voluntary work is tiring but you don't want to get a little play time before training? (B) M: So, you think the voluntary work is tiring and you do want to get a little play time before training? (C) M: So,  you think the voluntary work is meaningful although new volunteers are required to complete 25 days of training? (D) M: I am really sorry, I did not catch that. Would you slow down, please?

Ex Output:
B


Ex Input:
M: That's quite a lot of books you're carrying. Let me help you with those. ,F: I'm just going to put them on the desk, just around the corner. I shall be able to manage without help. Thanks anyway.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: Seems like you don't need my help. (C) M: I can move the desk since you need my help. (D) M: I can remove the books from the desk since you ask me to do so.

Ex Output:
B


Ex Input:
F: Oh, dear, the office is full of smoke. I can hardly breathe. ,M: I agree. Smoking should not be permitted here.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: The air here is so refreshing. (C) F: Yes, we should ban smoking in our office. (D) F: I am sorry, sir. You cannot smoke in this shop.

Ex Output:

C