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: Good morning, sir. May I come in? ,M: Good morning. Yes, please. Take a seat. I guess you want to open an account, right? ,F: Yes. ,M: Great. What account do you want to open? A checking account or a saving account? ,F: I would like to open a saving account in your bank. What is the procedure? ,M: Would you like to open an account in a single name or in joint names? ,F: I would like to open a joint account with my father.
(A) M: OK. You want a saving account with a single name, don't you? (B) M: Sure. You need to open a saving account in joint names with your mother. (C) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) M: OK. Why do you want to open a checking account in a single name?

Ex Output:
C


Ex Input:
F: Have you chosen the music for the party yet? ,M: I was going to just let people bring their own. ,F: Oh, I don't think you should do that. One person needs to be in charge. Otherwise, people will start disagreeing. Sony's really good at music. You could ask her. ,M: OK. Have you got her number? ,F: Yeah, it's on my mobile. I'll text it to you.
(A) M: You have helped me prepare for the party. The party is a great success. (B) M: Thank you for asking Sonia for the information of the party. (C) M: I know Sony's phone number, but thank you for offering to tell me. (D) M: I didn’t hear you. Please could you tell me again?

Ex Output:
D


Ex Input:
F: Are you staying by yourself again this summer vacation? ,M: No, I'm not. My brother and sister are staying with me right now. ,F: Really? What are they doing this summer? ,M: Well, my brother is on vacation now. He always wants to come and visit the city. ,F: What about your sister? ,M: She has a part-time job at the university. ,F: And do you have anything special to do? ,M: Nothing special. I work as a waiter in the morning and in the afternoon I read books bought from a bookstore days ago. What about you June? Are you in school this summer? ,F: Yes, I am.
(A) M: That's nice. I work at the university in the morning. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: Well, I work as a waiter at the restaurant in the afternoon. (D) M: Well, I work as a waiter at the restaurant in the morning.

Ex Output:

D