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 you do all day is working and watching TV. You really should start thinking about exercising. ,M: I never thought about that. But you're right. I should start doing more outdoor activities.
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: You need to reduce outdoor activities and have a good rest at home. (C) F: It takes me three hours to finish my homework every day. (D) F: You can do some outdoor exercise after dinner every day.
Example Output: D

Example Input: F: You can speak German? Where did you learn it? ,M: I used to live in Germany with my mother when I was little.
(A) F: So you acquired German when you lived in Germany. (B) F: I didn’t hear you. Please could you tell me again? (C) F: Oh, you are a German, so you speak fluent German. (D) F: You and your dad used to live in Germany? Now I understand why you speak German.
Example Output: A

Example Input: M: Hello, Mary, I heard yesterday that you had been in hospital for 3 days. ,F: I just hurt my leg a week ago, but nothing serious. And the doctor told me I would be fine in a week.
(A) M: You just hurt your leg yesterday,so you need a good rest. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: I'm sorry to hear that you hurt your leg three days ago. (D) M: I'm sorry to see you so late for you had been in hospital a week ago.
Example Output:
B