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: Look at the monkeys running around on the rocks. They are so lovely. ,M: Yes, their surrounding seems to suit them very well. Let's go over and see the panda now.
(A) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) F: Before we go, do you know where is the toilet in this zoo? (C) F: Excuse, how much are these in total? (D) F: I can't find this museum's exit.

Ex Output:
B

Ex Input:
F: Was John nervous while facing the interviewers? ,M: I have never seen such a confident person. He even made some jokes.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: He is confident that he can do well in the exam. (C) F: Tom is outgoing. He always makes lots of new friends. (D) F: He is very confident in daily life I hope he can pass the interview.

Ex Output:
D

Ex Input:
F: Peter, how was your trip last weekend? ,M: Well, I didn't have a trip at all. By the time I got to the train station, the train had already left.
(A) F: You arrived at the station very early. Why didn't you catch up the train? (B) F: Why did you miss the train? (C) F: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (D) F: Why didn't you get to the station? Did you have anything urgent to do?

Ex Output:
B