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: M: I was awaken up in the middle of the night. I felt the building shaking. ,F: What time did it happen? ,M: I don't know. It was dark everywhere. I couldn't see the clock. Luckily, I lived on the second floor. I hurried to run out. With the Moonlight I found it was 2:45.
(A) F: So, you could not see your watch because the electricity was cut off. But with the moonlight you found it was 3:45. (B) F: So, you mean you could not see your watch because the electricity was cut off. (C) F: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (D) F: So, you mean you could not see your watch because you hurried to flee for your life and you lived on the fifth floor?
Example Output: B

Example Input: M: Good morning, madam. What can I do for you? ,F: I bought this new radio here half a month ago, then I posted it to my daughter who is studying English in Shanghai Foreign Language University. But a week later she posted it back, saying that it doesn't work. I don't know why. Could you help me check out the radio? ,M: Let me see. Did you check it when you bought it?
(A) F: The radio stopped working one day when I was listening to music. It doesn't work anymore. (B) F: I didn't hear you. Please could you tell me again? (C) F: I really need to go back to the post office to take back my radio. (D) F: Maybe. Now the radio stops receiving any program.
Example Output: B

Example Input: F: It's getting dark. Do you have the time? ,M: It's a quarter after 8:00. ,F: Time flies. It feels like it's only 7:00. I'd better start heading for home.
(A) M: Don't worry, it is only 7:00, you still have plenty of time to go home. (B) M: Me too,usually I have to get home at 8:30, there is only 15 minutes left. (C) M: Yeah, it's already 7:45, you really need to hurry to go home. (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.
Example Output:
B