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: What can I do for you? ,M: I want to check out these books. ,F: Your library card, please? Oh, you have late fees. It comes to $4. You have to pay it off before you can check out more books. ,M: OK, no problem.
(A) F: Sorry, our bookstore is closing now. (B) F: You can apply for a library card over there. (C) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) F: Besides, may I see your ticket to the museum? I need to check it out.

Output: C


Input: Consider Input: M: Sarah I've heard that you want to move into a home stay family. Is it true? ,F: Yes, I've been staying with my aunt and now my cousin is arriving from Singapore and my aunt needs to serve a room for him.
(A) M: You are so considerate. I hope you enjoy staying in a homestay family. (B) M: You are so kind to serve a room for your aunt. She doesn't need to move into a homestay family. (C) M: I'm so glad that you don't need to move into a homestay family. Hope you enjoy your life with your cousin. (D) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please?

Output: A


Input: Consider Input: F: Are you OK? ,M: I think so. I'm just a little frightened. ,F: I should think so that looks like a pretty bad accident. ,M: It was, my guess I'm lucky. ,F: You bet you are. What happened? ,M: Well, I was just driving around the corner back there. And I lost control of the car. I must have hit an ice patch. ,F: I can't believe you survived. ,M: What happened to the driver of the other car? ,F: I'm not sure. ,M: I saw him being carried away in an ambulance. He didn't look good.
(A) F: Of course he will. If I were him, I would be frightened too. (B) F: I didn’t hear you. Please could you tell me again? (C) F: Yes, I saw him in the ambulance too. But he looks good. (D) F: Yeah, I saw he was in an ambulance too. Hope he'll be fine soon.


Output: D