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: M: Lily, I can't catch up with the English teacher very well. ,F: What's the problem? ,M: You are quite good at English. Can you help me with it? ,F: Sure, but you'd better take an additional course in some English schools. ,M: English schools? What's that? ,F: This kind of school is good at helping people to improve their English. ,M: Is that different from our school's English course? ,F: Yes. Before you start your training, they will test you on your English first. ,M: Then? ,F: Then they will recommend you the class that suits you. ,M: Really? How good can my English get there? ,F: You see how well I am doing. I studied there, too. ,M: Alright. I'll tell my father about it.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Yes. I think you should go to the English schools. It's really helpful. (C) F: Why are you going to the English school? Although it's helpful to me, it doesn't suit you. (D) F: I don't know you but I find the additional course in English schools is easy but not helpful.

Output: B


Input: Consider Input: M: I can't find my maths book in the drawer, has anyone taken it? ,F: It should be on your desk in the bedroom. I cleaned the drawer yesterday.
(A) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) M: So you mean my math book is probably on my desk, don't you? (C) M: As you said, my maths is book probably on my desk in the dining room, right? (D) M: Why do you say that my maths book is probably on my bed? You didn't clean the drawer yesterday.

Output: B


Input: Consider Input: F: Hi, Sam. Would you like to come for Indian food with us next Friday? ,M: Sure. I love Indian food. Who else is coming? ,F: Jane, Susan, Pete and 2 colleagues of mine.
(A) M: OK. Five people are enough for the Chinese hotpot. (B) M: Excuse me, could you repeat the question? (C) M: That is good. Seven people will go for Chinese food on Tuesday. (D) M: Sure. There are seven people for the Indian food. It will be great.


Output: D