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: Was that the telephone ringing? ,F: I didn't hear anything. ,M: I thought I heard it ring 2 or 3 times. ,F: Sometimes when the windows are open, you can hear the neighbor's phone. ,M: Well, I'm expecting an important phone call and I don't want to miss it.
(A) F: Relax. You're so nervous. You already missed the important phone call. Maybe you should call them back. (B) F: I'm sorry, I didn't understand. Could you repeat a little louder, please? (C) F: Relax. You're so calm. You should be nervous in case you miss the important phone call. (D) F: Relax. You're so nervous. You should be more calm to wait for the important phone call.

Ex Output:
D

Ex Input:
F: Charlie, do you know a restaurant called Bravo? ,M: Bravo? I know the name, but I'm not sure where it is. ,F: It's on George Street. The food there is excellent.
(A) M: Oh, I'm sure where it is. Let's talk more about its dish. (B) M: Excuse me, could you repeat the question? (C) M: Oh, really? It is not on George Street? Let's talk more about this street. (D) M: Yeah, the food there is excellent. Let's talk more about this restaruant.

Ex Output:
D

Ex Input:
M: Oh, hello, I like the holiday that mentioned Whales, was it whale watching? ,F: Oh yes, it's very popular. ,M: How long does it last? ,F: 2 days. We take up to 15 people on this tour, though we usually run it with just 12 or 13. ,M: And when is the next tour going? ,F: Umm, there is one in 3 weeks time on April the eighteenth and then we don't have another one until June the second.
(A) M: It's still March now. We only need to wait for a week. (B) M: It's still March now. We still have 3 weeks to wait. (C) M: It's already April, so we only need to wait for a few days. (D) M: I am really sorry, I did not catch that. Would you slow down, please?

Ex Output:
B