You will be given a definition of a task first, then some input of the task.
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.

F: What are you guys doing? ,M: Can't you see? We're making paper airplanes. ,F: Yeah, I see that, but what are you doing with them? ,M: We're flying them, of course. ,F: Out of the window? ,M: Yeah. ,F: That isn't right. You shouldn't throw paper out of the window near the land on the street and someone will have to pick it up. You're just making the street dirtier than it already is. ,M: No, we aren't. First of all, we're not throwing the airplanes out. We're making them fly. And second, most of our planes aren't going on the street. ,F: Where are they going? ,M: See that building across the street from us? We are sending them on to the roof of that building. We've already gotten more than 50 on there. ,F: You're going to get in trouble. ,M: Only if you tell mom and dad.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: I don't know you at all. Why do I need to tell your mom and dad? (C) F: Okay, daddy. I won't fly paper airplanes anymore. (D) F: Yes, my little brother, I will tell our mom and dad.
Output:
D