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: Hello Jane, Jack asked me to have a talk with you. He is really sorry about that. ,F: I don't want to talk to him. ,M: Would you let me explain that to you, please? ,F: I'm not interested. He promised to meet me at the restaurant but he didn't show up. I don't want to see him again.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: Don't be so nervous. Tom will show up on time. (C) M: Oh, you are so happy that he met you at the restaurant. (D) M: It's useless to be so angry. He is not sorry at all.

Ex Output:
A


Ex Input:
M: I see you are busy now, Kate. Once you finish, I'd like to have a talk with you. ,F: Alright, come in please.
(A) M: I have time to help you with work. (B) M: I’m sorry, I don’t understand. Could you say it again? (C) M: I can see that you are not busy, so I want to have a talk with you. (D) M: I would like to have a talk with you.

Ex Output:
D


Ex Input:
M: If the traffic wasn't so bad, I should have been home at 6:00 o'clock. ,F: What a pity. Henry was here to see you.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: Oh no. I am in a terrible car accident. (C) M: I am so sorry that I can't meet Henry. I worked late again tonight. (D) M: I am so sorry that I can't meet Henry.

Ex Output:

D