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: Can I help you? ,M: Yes, I'm looking for a sweater in a medium size. ,F: Let's see. Here is a nice white one. What do you think? ,M: I think I'd rather have it in blue. Oh no, the pink one. It looks better. ,F: OK. Here's pink in a medium. Would you like to try it on? ,M: OK. Yes, I love it. It fits perfectly. How much is it?
(A) F: This white sweater you choose is cheaper than others. (B) F: Let me check. Blue sweater in large size, $40, please. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: We only have large-size pink sweater, so there's a discount.

Output: C


Input: Consider Input: F: Hi, Tim. I was wondering if you'd like to drive me to the station tomorrow morning? ,M: I would be happy to drive you there. When do you need to go? ,F: I should get to the station an hour in advance. So I need to leave my house at 7:30.
(A) M: Alright, I'll drive to your home to pick you up at 7:30, I will come on time. (B) M: I didn’t hear you. Please could you tell me again? (C) M: Okay, 7:30 sounds reasonable, then we can go to the school at 8:00 together. (D) M: Alright, I'll come to your home at 8:30 and drive you to the airport.

Output: A


Input: Consider Input: F: David, where did you get so many old books? ,M: Some graduates were selling their used books. They were really cheap so I bought some. ,F: But aren't you leaving China in 2 weeks? How can you finish reading so many books?
(A) M: Yes, I will leave China in one month. But these old clothes are really cheap! (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: Exactly! In two weeks, I will back to America, and these old clothes will be brought to America. (D) M: Yeah, I will back to America next year, so I bought some really expensive books!


Output: B