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: Hasn't it been hard for you without your sister and brother, mom? ,F: Yes, Sam, of course. We haven't seen each other for a long time. ,M: Mom, I have a surprise for you. I'll go on a business trip to Russia. I want you to come with me. You can meet them finally. ,F: No, Sam. It's very thoughtful of you, but I'm too old and sick to travel so far.
(A) M: Really? You don't think you are old and sick to travel? And you refuse my invitation because you haven't prepared for the trip? (B) M: OK, I see. You refuse my invitation because you are unsuitable for such a trip and you think you are too old and sick to travel so far. (C) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) M: Really? You think you are not sick to travel but you refuse my invitation because you prefer to travel with your sister?
Example Output: B

Example Input: M: There is a new bakery on the next street. Should we get some pork pies or beef pies this morning? ,F: I want something sweet. The egg cake lady just opened her doors. Let's go stand in line.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: I agree. I want beef pies too. (C) M: Great, egg cakes are my favorite. (D) M: I had egg cakes for breakfast.
Example Output: C

Example Input: M: Have you ever thought of moving, Sarah? ,F: We thought about it, but my husband and I can't afford it right now. ,M: Buying a house near our company can be expensive, but there are ways to find cheaper houses.
(A) F: We never think about moving, so we don't need house agency service. (B) F: You mean houses near our company are really cheap? I didn't expect that. (C) F: Great. Please tell me more after we finish the project and deliver it to boss. (D) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please?
Example Output:
C