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.

Ex 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.

Ex Output:
A


Ex 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.

Ex Output:
D


Ex Input:
F: 5,4,3,2,1. Here I come! Now, where could you be? Not under the table, not under the bed, not in the closet. There you are, behind the door. ,M: You found me, Mommy. Now, it's your turn to hide.
(A) F: You hid in the closet just now, which took me  an hour to find you. (B) F: I lost my keys yesterday and I found it behind the door at last. (C) F: Dad, I want to hide under the bed, which is hard to be found. (D) F: I am really sorry, I did not catch that. Would you slow down, please?

Ex Output:

D