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: F: Hello, this is Katrina Travel Agency. May I help you? ,M: Yes, this is Edgar. I'll have a holiday. And I'm thinking about traveling abroad with my parents. Can you give me some advice? ,F: Of course. May I ask how long you will plan to travel. ,M: About a week.
(A) F: It's enough for your friends to travel abroad for ten days. (B) F: Seven days is good choice. Your parents must have a happy time. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: You are so happy that you can travel alone for five days.
Example Output: B

Example Input: M: Jane, would you mind turning down the music? ,F: Why? I thought you would like to listen to some music while working. ,M: Yeah, but you know, jazz and classical are not really my thing. I prefer folk.
(A) F: Really? But I remember you really like jazz. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: But you always say that classical music is your favourate! (D) F: OK, I will change the folk music to jazz.
Example Output: B

Example Input: F: Hello, Lin Fang! ,M: Oh! Hi, Lucy! ,F: What's the next lesson, Lin Fang? ,M: English. ,F: Oh, good! That's my favorite subject. ,M: That's because you always find it so easy. I find it very difficult so I don't like it much. ,F: Nancy finds English quite difficult too. But she says it's her favorite subject. ,M: Yes, I know, and her second favorite subject is math. ,F: Math is my worst. I don't like it. I always get the answers wrong. ,M: So if English is your favorite subject, what's your second favorite? ,F: PE. What about you?
(A) M: So English is your second favorite class? It's mine too! (B) M: Well, your second favorite class is PE, that's my favorite class! (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: Oh, Math is your favorite class? That' my favorite class.
Example Output:
C