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: M: I need to take some medicine. I think I got a cold. ,F: Well, you might want to drink some water first. I haven't seen you have anything to drink all day even while we were having lunch.
(A) M: You are right, I  should eat all this food first. (B) M: I only like apple juice, warm water is not suitable for me. (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: I won't take any medicine because it dose no good for my cold.

Output: C


Input: Consider Input: F: What about taking a tour around Cambridge today? ,M: I did that with a friend yesterday. ,F: But didn't you say you would go to the London Eye yesterday? ,M: My friend had already been there, so I changed my plan. Today I want to see some modern art work. ,F: If so, you can go to Tate Modern. It's a museum with a collection of international artwork from the nineteen hundreds. ,M: Do many people visit it? ,F: Yes, it's very popular. But don't worry, it's usually not crowded on weekdays. If you go tomorrow though, there're maybe a lot of people.
(A) M: You are right. I should go there today on Monday, although there might be crowded. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: I will go there tomorrow on Friday. (D) M: I should go there today on Saturday to avoid the crowd.

Output: B


Input: Consider Input: F: Hi, John. What are your plans for the weekend? ,M: Huh? My plans? Nothing really. Probably read some books or play on my computer. Why? ,F: Well, I want to invite you to my home for dinner. So we can get to know each other better. ,M: You want to invite me to dinner? But we've been in the same class for the past 2 years and you've never even spoken to me before. ,F: Yes, I know. We seldom have the chance to talk. I'm always playing with my friends and having fun, while you always have your face in a book. ,M: Yeah. Well, I guess I can come. Thanks. Actually, I do feel like relaxing. I have been working all week on science project. ,F: Really? I haven't even started it yet. Science is so boring. ,M: You haven't started it yet? Listen, maybe you should spend this weekend doing the project. It really is a lot of work. We can have dinner next weekend. ,F: No, no. It has to be this weekend. Hey, I know, you're good at science and have already done the project. So after dinner, maybe you can do my project. ,M: Do your project? ,F: I... I mean, help me do my project. Just bring your books and the project plan. It shouldn't take you...Ah... I mean us, long to finish. ,M: Us? Yeah, I see. Listen, Mary, I've just remembered. I'm busy this weekend, so I won't be able to make it to dinner.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: Please come and help me with my project! (C) F: You mean you're sure to come to dinner and help me with my science. Thanks. (D) F: I am inviting you to discuss a problem.


Output: B