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: Now, please tell me something about yourself. ,M: My name is Henry Smith. I left school for months ago. I got A's in nearly every subject. ,F: Then why didn't you go to college? ,M: I wanted to. But I couldn't afford the costs. My father lost his job half a year ago. My mother makes too little money. My younger brother and sister are still studying in high school. I must work to help support my family.
(A) F: I didn't hear you. Please could you tell me again? (B) F: So there are 4 people in your family, right? (C) F: So there are 5 people in your family, and your brother and sister are still in middle school, right? (D) F: Wow, you have 6 people in your family.

Ex Output:
A

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 here to ask you for help. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: I'm here to invite you for dinner. (D) F: Now, here is the book to be returned.

Ex Output:
D

Ex Input:
M: Shall I pick you up then? ,F: I don't know. The traffic will be really bad at that time. You know what it's like after a concert. I was thinking of catching the train. ,M: Hmm...It will be late. Won't that be a bit dangerous? I'm not busy you know.
(A) F: Yeah, it will not be late. As there will be no taxi, I think you can pick me up then. (B) F: So, as the traffic will be heavy then and you are not busy, you can pick up me then? (C) F: Really? You are very busy? Oh, I think you can pick me up then, because the traffic will be heavy. (D) F: I'm sorry, I didn't understand. Could you repeat a little louder, please?

Ex Output:
B