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: I need to go to the bank. ,F: But they're all close today? ,M: Closed? Are you kidding? What is it? Some kind of holiday today?
(A) F: Hey, calm down. Just joking, The post office is right behind you. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Hey, calm down. Just joking, there's no bank in the town. (D) F: Hey, calm down. Just joking, which bank do you want to go?

Ex Output:
D

Ex Input:
F: How about going for a bike ride? ,M: Sure. Where? ,F: Let's call Harry. He can tell us the best place to go.
(A) M: I am afraid I did not quite catch what you were saying. Please repeat it. (B) M: Yes. We should ask Harry if he knows the best place to ride. (C) M: Yes. We should borrow a bike from Harry. (D) M: Yes. We should ask Harry if he knows the best place to hold a party.

Ex Output:
B

Ex Input:
M: Excuse me, could you tell me where the nearest post office is? ,F: Yes, walk down this road and then turn left when you get to the third crossing. You will see it not far ahead of you.
(A) M: Thank you. I'll go to the nearest cinema. (B) M: Thank you. I'll go to the nearest hotel. (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: Thank you. You'll go to the nearest post office.

Ex Output:
C