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: All the time I was at school, I wanted to be a nurse. But my mother worked in a shop and said it wasn't good to be on your feet all day. ,M: Then what's your job now? ,F: I'm doing what I always wanted to do.
(A) M: I see, you are a teacher now. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: I see, you are a nurse now, and it's surprised me that you just wanted to be a nurse recently. (D) M: I see, you are a nurse now.
Example Output: D

Example Input: M: Excuse me, is there anyone sitting here? ,F: Oh, no, please. ,M: Ah, thanks. Um, it's a long flight. ,F: Yeah, 11 hours.
(A) M: The is a long journey on bus. (B) M: The train we take lasted eleven hours. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: It's really a long flight which has 11 hours.
Example Output: D

Example Input: M: Hello, Mary, where did you go over Spring Festival? ,F: I went to Taiwan with my parents. And you Tom? ,M: I just stay at home, and did my homework and some housework everyday. ,F: Oh, poor you. Were your parents very busy then? ,M: Yes, they were. So how was Taiwan, Mary? ,F: What did you do there? ,M: Oh, it was great. We flew there a few days before Spring Festival and stayed for about 10 days. We visited a lot of famous places, tried some of the local food and took a lot of photos. I can show them to you if you want.
(A) F: Really? You will show me your photos? I really want to see your photos. (B) F: Really? You visited no place but just tried some of the local food and you will bring me some food? (C) F: You mean you stayed for about 30 days and you will show me your photos? (D) F: I’m sorry, I don’t understand. Could you say it again?
Example Output:
A