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.

Example Input: M: Ivy, how do you like your new apartment? ,F: Well, I wish I hadn't 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 across the hall often comes over to borrow things, but she seldom returns anything.
(A) M: Good, if you live together, you can borrow things from her. (B) M: I’m sorry, I don’t understand. Could you say it again? (C) M: Oh, That's terrible. You should ask her to return back. (D) M: Oh, so do you want to rent an extra room from him?
Example Output: C

Example Input: M: Why do you have an umbrella with you? It's not supposed to rain today, is it? ,F: No, but it's supposed to be very hot. I'll use this umbrella to protect myself from the sun as soon as these clouds go away. ,M: I've never heard of using an umbrella for protection from the sun. ,F: Did you know that the Chinese invented the umbrella, and that it's first use was for protection against the sun, not the rain? ,M: I had no idea, you must get sunburned easily, huh? ,F: Oh, absolutely. I always get super red if I haven't put on sun cream.
(A) M: Do you never put on sunscreen because you are not easy to get sunburn? (B) M: Since you are so easy to get sunburned, why don't you bring an umbrella? (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: You don't even know the first use of umbrella. No wonder you don't have an umbrella.
Example Output: C

Example Input: M: What is the biggest holiday that your family celebrates? For my family, it's the New Year. ,F: That is a big one for us, too. But even more important our birthdays. ,M: Oh, Why is that? ,F: I think my grandparents started the tradition. They met and got married when they were older. They thought they would not be able to have children. When their first baby was born they were so happy. They decided that every birthday for their children would be a big event. ,M: So that tradition passed on to your parents?
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: Yeah. My grandparents made birthdays the most important holidays. (C) F: So your grandparents made birthdays the most important holidays? (D) F: Well, I think my parents first thought birthdays are the most important.
Example Output:
B