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: Hello, China Travel Agency. Can I help you? ,M: Yes, I'd like to travel to London. So I want to make a reservation for me on May fourth. ,F: Just a moment, please. I'm sorry, but the flights are fully booked on that day. The next available flight is on May fifth. They have 2 flights: one at 9:30 AM and the other at 2:00 PM. Both flights have seats available. ,M: That's great. I'd like to take the first available flight. What's the fair, please? ,F: 2250 yuan. ,M: Here is 2300 yuan.
(A) F: Okay, as you want to take the last available flight, you have to pay 2,300 yuan in total. (B) F: Really? You mean here is 3300 yuan? Oh, actually you just have to pay 2,250 yuan in total. (C) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) F: Well, as you want to travel to London and take the first available flight, you have to pay 2,350 yuan in total.

Ex Output:
C


Ex Input:
F: Dad, look at this friendship quiz. ,M: Why don't you try it? The first question, how often do you get in touch with your friends? ,F: Hmm... My friends aren't in the same secondary school as me, and I dislike ringing people up. I don't call my friends, even once a week. ,M: That means seldom. Secondly, how many friends can you talk with when you are upset? ,F: Oh, I can't think of any. I usually talk with you or mom when I feel sad. ,M: Poor Susan, you can't rely on us all the time. The last question, your friend wants to talk with you. Where would you have the talk? ,F: Well, we can't talk in the classroom. Maybe I would talk to her in a shopping center. We can talk and shop at the same time.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: All right. So you talk with your teacher in a shopping center. (C) M: All right. So you only talk with your friend in a classroom. (D) M: All right. So you only talk with your friend in a cafe.

Ex Output:
A


Ex Input:
M: So, Marcia, what did you think? ,F: Well, between Sarah Tims and Daniel Watson, I think the choice is pretty obvious. ,M: So do I. Daniel looked so good on paper. His resume was a little too perfect. ,F: He seemed great when I first spoke to him. ,M: Yes, but first impression often lies. I guess some people like that sort of style, but it wouldn't fit in with us. He was much too confident.
(A) F: Really? You think the first impression never lies and your impression of Daniel is modest? (B) F: Really? You guess no one like that sort of style and your impression of Daniel is convincing? (C) F: So, his resume was not perfect. But why your impression of Daniel is overconfident? (D) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?

Ex Output:

D