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: You don't look very happy. What seems to be the problem? ,F: I've got to write a long composition for my English class and I just can't come up with any idea and it's due tomorrow.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: You can go to the teacher's office. You can ask the teacher to help you with your French composition. (C) M: You don't look well. Don't worry. You still have many days to prepare for a long composition. (D) M: Maybe, Lily can help you with your long composition in French which is due to tomorrow.

Ex Output:
A


Ex Input:
F: How may I help you? ,M: I need to buy some clothes for my daughter. I don't know what size to get. Can you help me? ,F: Certainly. How old is she? How tall is she? ,M: She is 9 years old and 4 feet tall. ,F: We have a great selection of clothes for young girls. Pants start at $10 and shirts start at $7.
(A) M: Really? You have a great selection of clothes for young boys and the cheapest shirt is just $10? (B) M: Excuse me, could you repeat the question? (C) M: So, as you mean pants start at $15 and shirts start at $7, the cheapest shirt is just $7? (D) M: Really? The cheapest shirt is just $3? Oh, I need to buy some clothes for my wife.

Ex Output:
B


Ex Input:
F: Excuse me. We'd like to rent a flat near the university. ,M: OK. How many people are you looking for somewhere for? ,F: 2. We'd like something as cheap as possible. ,M: OK. How many rooms do you need in the flat? ,F: We'll need 2 bedrooms, the kitchen and dining room can be separate or combined.
(A) M: OK. I'll find some flats near the bus station for you three guys as you wish. (B) M: Excuse me, could you repeat the question? (C) M: A flat near the university with one bedroom. Just wait a moment, please. (D) M: I got the requirements. Here's the list of flats near the university. Have a look.

Ex Output:

D