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.

Input: Consider Input: F: Welcome to our program. Today we have invited Fred Watson, an expert on the environment to talk to us.
(A) M: Nice to meet you guys. Let' s talk about environmental problems today. (B) M: Hello, everyone! My name is Bob, today, let' s talk about modern technology. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: Thanks, I' glad to be your studio. Today, our topic is about industrial development.

Output: A


Input: Consider Input: M: By the way, miss. Where is the toilet? ,F: The toilet is there, but I'm afraid it's full at the moment. ,M: What? Oh, I think I have to wait. Thank you very much for your help, miss.
(A) F: No problem. Since you have known where the toilet is, you'll have to wait. (B) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) F: I don't know where the toilet is, but you're booking a table, aren't you? (D) F: I don't know where the toilet is, but you're waiting for me, aren't you?

Output: A


Input: Consider Input: M: Hi, Rachel, how are you? ,F: Don't ask. I've had a terrible morning. ,M: Oh no, what happened? ,F: It's my car. I came out of the house this morning and found that the back window had been broken into pieces. ,M: Oh no, that's awful. What were they after? The car's MP3 player?
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: More things were taken away after somebody breaking into my car. (C) F: Not really. My car was lost! I haven't seen my car since yesterday. (D) F: Many were lost as my house was robbed. It's good I don't have a car.


Output: B