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: Nice to see you, Mary! Come in, please! ,F: Thank you Tom, but I am afraid not now. I've come only to return the book borrowed from you. ,M: Wonderful. I've been waiting for you a long time and longing to know what you think of it. ,F: It is very interesting and I've learned a lot from it. ,M: Well, so it is with me.
(A) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) F: It is very boring. (C) F: You are interesting. (D) F: It's just so-so.

Ex Output:
A


Ex Input:
M: It's too hot. I'm not sure I can walk anymore. ,F: Oh, come on, you're not so old. I want to go to Monkey Island. ,M: Great. Let's go. I love monkeys. That's why I started dating with you. ,F: You're very funny today. As for me, I've always loved elephants and bears. I like their smell. Maybe that's why I chose you. ,M: Hahaha, I wish we could get some iced coffee somewhere. ,F: Yes, then I could buy you a coffee. ,M: Thanks. Hey, look at that polar bear. ,F: Oh, terrible. I can't believe they have him out in the sun like this. Isn't it too hot?
(A) M: I am afraid I did not quite catch what you were saying. Please repeat it. (B) M: I agree with you. The polar bear is in a pool. (C) M: I agree with you. The polar bear should be out in the sun. (D) M: I agree with you. The polar bear should not be out in the sun.

Ex Output:
D


Ex Input:
M: Mary, how about going for a few beers after work? ,F: You know that is attractive, but it's really not good for our fittness.
(A) M: Let's go to the library and borrow some reference books. (B) M: I am really sorry, I did not catch that. Would you slow down, please? (C) M: How about going for a walk in the park with our manager? (D) M: OK, let meet each other at the Sky Bar.

Ex Output:

C