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:
F: Is that your dog? He has been digging up my flowers. ,M: It is my dog but you must be mistaken. We keep it in the house all the time except when we walk him in the park and there must be another dog that looks like him.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: Sorry, I am mistaken. (C) F: It's so annoying that my dog likes digging up flowers! (D) F: You must be wrong, this cat looks like mine but actually it's not.

Ex Output:
B


Ex Input:
F: What do you think of your new life in college? ,M: Well, it is very nice. There are many clubs in the college, such as dancing clubs, painting clubs and football clubs. ,F: Have you joined any clubs? ,M: I have joined a chess club. You know, I am very fond of playing chess. ,F: Now, many college students do a part time job to earn some pocket money. What do you think of that? ,M: Well, it can really help us earn some money and gain some experience, but I am afraid it would take up too much study time.
(A) F: I think so. Part-time jobs only take up little study time, but the return is huge. (B) F: I agree. Part-time jobs are so time-consuming that nobody now ever thinks of that. (C) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) F: You think part-time jobs can help one to study, while they take up little study time.

Ex Output:
C


Ex Input:
F: Is this Mister Brown's office? ,M: Yes, but he's gone out. Did you tell him beforehand about your coming? ,F: Yes, I found him yesterday and he told me to come here at 9:00 today, it's almost the time now. How soon will he be back? ,M: Well, maybe before 10:30. In fact, I'm waiting to see him too. When I arrived at about 8:00, only his secretary was here. She's gone to the copy shop to have a form copied. ,F: Perhaps it's the application form for students to study in Britain? ,M: That's right, the secretary said these days, many students have been coming to apply to study in Britain. ,F: Perhaps you're one of them? ,M: Yes, Mr Brown told me to fill in a form, so they'll know if I am qualified. Why do you want to see Mr Brown sir? ,F: I want to ask him how much I pay if my 2 daughters study there. ,M: So, your daughters have filled in the form already? ,F: Yes, that was last Tuesday. Look, Mister Brown is coming, and his secretary is with him.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: Only his secretary is coming, where is Mr. Brown? I don't need to fill the form, I will ask him something. (C) M: Yes, I see Mr. Brown and his secretary coming. I have to ask him if I am qualified to study in the US. (D) M: I see they are coming, both Mr. Brown and his secretary. It is great that we don't have to wait anymore.

Ex Output:

D