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: Next week I'm going to New York to sign a business contract. What would you suggest I see while I'm there? ,F: You should definitely see the UN Building and from there, you could walk over to Broadway and see a movie or drama. ,M: How about New York's universities? I'm especially interested in learning about their schools there and the courses they offer. ,F: Columbia University and New York University are two of the best schools in the city. I'm sure they offer excellent courses. ,M: Do you have a map of the city? ,F: Yes, I have one right here in fact. I can give you this one but I'd also suggest that you stop at the visitor's office near the train station. They will have good up-to-date maps and they can give you more tourist information about the city.
(A) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) M: OK, I will ask visitor's office for help as soon as I get lost. (C) M: OK, I will get a map on visitor's office. (D) M: I will take a map at the UN office directly.

Ex Output:
C


Ex Input:
F: Excuse me, could I ask you some questions? ,M: Of course. ,F: I work for an advertising agency and I'm doing some research. It's a new magazine for people like you. ,M: People like me? What do you mean? ,F: People between 20 and 35 years old.
(A) M: I am young. The magazine is not suitable for people like me. (B) M: So I am in the young group between 20 and 35, right? (C) M: So I am in the mid-aged group between 35 and 55, right? (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.

Ex Output:
B


Ex Input:
F: Excuse me, sir, can you help me? I need to buy a bed for my new apartment. ,M: Of course, what size bed do you need? ,F: It's a small apartment so I don't want anything too big. ,M: Well, you should get a twin bed. That's the smallest size for an adult. It only fits one person. A bigger size bed is a double bed for 2 people. Then there are queen size and king size beds. Those are very large. There are much too big for you. ,F: OK. Thanks so much I'll get the smallest one.
(A) M: Well, honey, I think we should have a queen-sized bed. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: Mom, I think we should have a double bed, don't you think? (D) M: Sure. Here is the key for your apartment with the queen-sized bed.

Ex Output:

B