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:
M: Hey, I just finished reading a great book. It's about Steve Jobs. ,F: Really? But there are so many books about him now. What makes the one you read so special? ,M: Well, the one I read is by Walter Isaacson. It's different from the others, because Steve Jobs himself asked Isaacson to write it. ,F: Uhm, were they friends or something? ,M: Well, they knew each other well because Isaacson used to work for Time magazine in the 1980s. And he wrote about Apple products. But it was mostly a business relationship I think.
(A) F: Why did he offer to write about Steve Jobs himself? (B) F: Oh, the writer was a close friend of Steve Jobs'. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Oh, the writer used to write about Apple products.

Ex Output:
D

Ex Input:
M: What a beautiful day! The birds are singing, and the sun is shining in the sky. ,F: Not so loud, I just woke up and I have a headache.
(A) M: I'm sorry, I don't understand. Could you say it again? (B) M: Come on! It is a beautiful morning. (C) M: Oh, it's raining in the afternoon. You should take an umbrella with you if you go outside. (D) M: It is not the bedtime, why are you still sleeping in the evening? The sun has gone down.

Ex Output:
B

Ex Input:
M: I got tired easily recently, this morning I felt too sick to even get out of bed. ,F: I think you'd better take a blood test now, you can come to see the results next day.
(A) M: Excuse me, could you repeat the question? (B) M: You are right. Please ask a sick leave for me. I should go to the hospital. (C) M: You are right. I should leave home and take a cab to the hospital now. (D) M: I feel fine. I just did a physical examination and I will come back at the clinic to get the results next day.

Ex Output:
A