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: Hi Marina, I'm sorry to keep you waiting. I bought a map in the bookstore. ,F: Oh, we don't need a map at all. I'll be your tour guide. I'm familiar with every corner of the city. Chinatown, Broadway, Central Park, the Natural History Museum.
(A) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) M: I guess your hometown is in England, am i right? (C) M: No wonder you are so unfamiliar with America? (D) M: You really embody the typical American character.

Output: D


Input: Consider Input: M: Lucy, I'm terribly sorry to hear your mother was seriously ill. ,F: Don't worry so much, grampa. She is much better now.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: Is she still terribly ill? Sad for her. (C) M: After my operation, your mother is better now. Don't worry. (D) M: Good to hear that your mother has turned much better.

Output: D


Input: Consider Input: M: Hello, miss. I'm Sam and I am with the local paper. Now, I'm working on a report on difficulties living in the UK. May I ask you some questions? ,F: Sure.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: As a journalist, I'm glad that you let me ask you some questions. (C) M: Thank you for your help. As you can see, I'm a tourist. You can ask me any question about my home country if you want. (D) M: As your teacher, I can understand that you don't want me to ask you some questions.


Output: B