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: Congratulations on winning the speech contest, Peter! ,M: Thank you. ,F: Could you tell me some important factors in delivering a successful speech? ,M: Well, basically 4 points. Pronunciation, intonation, a well written essay and proper body language.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: So, you failed the speech contest because you believe pronunciation and intonation are the important factors in delivering a successful speech? (C) F: Really? Basically 2 point? And proper body language is the important factor in delivering a successful speech? (D) F: So, all of the above are the important factors in delivering a successful speech, except the  pronunciation and intonation.

Ex Output:
A


Ex Input:
F: Are you going to be an engineer when you grow up? ,M: Yes, what about you? ,F: I want to be a teacher, but my parents want me to be a doctor.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: Oh, you want to be a teacher in the future. (C) M: Your parents want you to be a teacher in the future. But you want to be a doctor when you grow up, right? (D) M: You want to be a doctor when you grow up, right?

Ex Output:
B


Ex Input:
F: May I drive the car this time, Bill? ,M: OK, I know you're a good driver, but be careful. ,F: Thank you Bill. Where exactly are we going now? ,M: I am not sure. Maybe we're heading for a small town to have a stop there. What do you think about, Laura? ,F: Shall we go down the valley to find a nice place for a camp? It will just take a short time to the valley.
(A) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) M: Good idea, and we can't have a bushwalk there because we are heading for a big city. You are very skilled at driving, Bill. (C) M: Good idea, and we can also have a bushwalk there. You are very skilled at driving, Lora. (D) M: Good idea, and we can also have a bushwalk there. You are very skilled at driving, Peter.

Ex Output:

B