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.

Example Input: M: Now, I see from your records that you're often off sick. ,F: Yes, I seem to get a lot of colds and things. ,M: I see. Can I ask about your general way of life? Do you smoke? ,F: I don't smoke. ,M: That's good. Do you eat a lot of fruit and vegetables? ,F: Not really, especially no fruit. ,M: Well, since you don't eat fruit, I think you should drink more water because it helps fight colds. ,F: Really? Hmm...I don't like drinking water. But, well, uh, perhaps. ,M: There's no perhaps about it. And some exercise is needed to improve your health. ,F: Oh, I go swimming once a week. ,M: Well, you should go swimming 3 times a week, so that it really helps your health.
(A) F: You mean exercise is not needed, and it's enough to go swimming once a week. (B) F: I'm sorry, I don't understand. Could you say it again? (C) F: Ok, I will go swimming twice a week. I hope it helps fight fever. (D) F: I think so. I hardly ever get sick because I go swimming 3 times a week.
Example Output: B

Example Input: M: Hello, Betty! It's me, Tim! Am I calling at a bad time? ,F: No, not really. ,M: I have invited some of my friends to dinner at my house this evening. I thought maybe you'd like to come too. ,F: Well, that sounds good. But I'm afraid I've got to do some reading for my English course at home. ,M: Today is Friday. You've got to relax and enjoy yourself on the weekend.Y
(A) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) F: You are right. I need to take some exercise. (C) F: I don't like to have fun. (D) F: You are right. You should have fun.
Example Output: C

Example Input: M: What time is it, Harriet? I'm starving, but I guess it's not time for lunch yet. ,F: Let's see. According to my iphone, it's just a few minutes past noon. ,M: What? I thought my watch was wrong. Shouldn't the sun be overhead if it's noon? ,F: Oh, Don, I can tell you weren't listening in science class last week. The sun is only overhead at noon for 2 days a year. ,M: Haha, very funny.
(A) F: I didn't hear you. Please could you tell me again? (B) F: Come on, don't laugh. That's what our science teacher told us. (C) F: You think my explanation is funny? This was taught in the science class last year. (D) F: This is not as scientific as you thought. You really weren't listening in the science class.
Example Output:
B