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: We're going to play football at noon, join us? ,M: Sorry, I hurt my leg last week because I fell off my bike and the doctor said I have to stay in bed for 4 weeks.
(A) F: Since you have to stay at home at noon, I'll bring you some lunch. (B) F: Tell me when you go to ride a bike this noon. I want to join you. (C) F: Where will you play football this noon? (D) F: I didn’t hear you. Please could you tell me again?

Ex Output:
A


Ex Input:
M: What's wrong with you, Lucy? ,F: Our dog Rusty is lost. Someone left the backyard gate open and he got out. My daughter is so upset right now. ,M: Have you called the local dog shelters? ,F: Well, they haven't seen him. They said they would call me if they find our dog, but I don't expect miracles. It's 2 days and... ,M: We can always look for miracles. Does he have any identification on him? ,F: He's wearing his sweater. He's brown with white spots and... Sorry, 'm not thinking straight. You know, he's a big part of our family. We got him when he was a little puppy. I'm just worried he was stolen or is injured somewhere. ,M: I understand. I used to pet dogs, too. Let's walk around the neighborhood. Hey, look! There he is. ,F: Rusty! Come here boy! Oh, Glenn, I can't thank you enough. I owe you a big favor.
(A) M: I didn’t hear you. Please could you tell me again? (B) M: You are welcome. I am so glad that we found Rusty. (C) M: Honey, don't be too worry, the local cat shelter called me ten minute ago. (D) M: Don't worry. One of our classmates runs a pet shop. You can go there and find a new cat if you want.

Ex Output:
B


Ex Input:
M: What are you doing, Jane? ,F: I am planning a party. ,M: A party? What party? Your birthday party? ,F: Of course not. My birthday is in December, don't you remember? It's the company's party. The general manager wants to invite some famous scientists, bankers and professors from universities to the party. These people are very important to the development of the company.
(A) M: I didn't know your birthday is coming soon. Let me help you plan your birthday party. (B) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) M: I know the company party you are busy with. Only famous businessmen will be invited. (D) M: You're working on a company party? Sounds so cool. How is the preparation going?

Ex Output:

D