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: F: Good evening, sir is there anything wrong? ,M: I'm afraid there is, and the service here has been terrible. We had to wait 40 minutes for the soup and then it was stone cold.
(A) F: Sorry. I will serve the soup for you right away. (B) F: I will take a look for you to see why the play hasn't started in the theater. (C) F: Excuse me, could you repeat the question? (D) F: I don't know why the bus hasn't come yet.

Output: A


Input: Consider Input: F: Where do you think you're going, young man? You get back here right now. ,M: Excuse me, but do I know you? You must have mistaken me for someone else.
(A) F: You don't know me. Oh, maybe I really made a mistake. (B) F: Show some respect. You should listen to me. (C) F: You don't seem like knowing me. That doesn't matter. You should no get back here. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.


Output: A