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: Excuse me, Miss, is there a plane to New York? ,F: Uh, let me see. One just left half an hour ago and the next one will be in 2 hours.
(A) M: Thank you, since I want to go to Washington, I asked planes to Washington. (B) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) M: Since I asked about how to book a ticket to London, I'll take one. (D) M: Thank you. Is there anyone besides me asking about the plane to New York?

Ex Output:
D


Ex Input:
M: Helen, how do you like your new apartment? ,F: Well, I wish I had moved in, the man who lives upstairs often plays the piano till midnight. I really cannot stand it. ,M: Why don't you ask him to stop? ,F: I've tried, but it doesn't work, he never listens to me. What's worse, he isn't the only one that I cannot stand. The woman who lives next to me often comes over to borrow things, but she seldom returns anything. ,M: Then, don't lend her anything. ,F: Now I don't even open the door when she knocks, but it makes me uncomfortable. I'm afraid I'll have to move again. ,M: You can move in with my sister Susan. The girl Jennifer, who is sharing her apartment has moved out, so she has a free room now. ,F: That's great, your sister is such a good girl. Everyone likes her. I'll call her and move as soon as possible. After all, I need to sleep well at night, in order to do well in the coming exam.
(A) M: Yeah, you never talked to the neighbors before, so it's time to do so. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: Just call her as soon as it's needed. Susan will be happy to help you. (D) M: Sure. I will also call my mom Susan to tell her about your phone call.

Ex Output:
C


Ex Input:
M: Hello, Mary! This is John Smith from the bank. Is Paul there? ,F: Not yet, John. He phoned me from the office 5 minutes ago to say that he was going to look for a birthday present on his way home.
(A) M: So he is going to the bank on his way home, right? (B) M: So he is going to the shop to look for a graduation gift on his way home, right? (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: So he is going to the office on his way home, right?

Ex Output:

C