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.

Input: Consider Input: F: So how's your new job going, David? ,M: It's going really well. I started 2 months ago and it's great. ,F: Which countries are you flying to? ,M: Mostly those in South America.
(A) F: I'm very happy that you're used to this job on the plane. I was a little worried when you first started a month ago. (B) F: So you do like your work on the plane, don't you? (C) F: Excuse me, could you repeat the question? (D) F: Does that mean the restaurant you work in South America?

Output: B


Input: Consider Input: M: What's your favorite subject, Lily? ,F: I used to like math, but now I feel it's so difficult for me. And physics, too. I fall in love with English.
(A) M: So English is your favorite subject, right? (B) M: Why didn't you like English now? (C) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) M: So Math is your favorite subject, right?

Output: A


Input: Consider Input: F: Where were you yesterday Mike? ,M: I was at home asleep. ,F: Asleep? I thought that you had to take an exam. ,M: I was sick. I had a fever. I couldn't get out of bed.
(A) F: You were sick? Of course, you have to rest yesterday. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: Come on, you couldn't cut the exam just because you didn't want to take it. (D) F: How could you forget exam date? I I have repeated many times.


Output: A