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: Jack, what is your favorite subject? ,M: My favorite subject? Well, I think I prefer science. Yes, science, I find it very interesting. The science teacher makes the subject very exciting. What about you? ,F: I always do very well in the maths tests. I also like geography. I like learning about people and the places where they live. Are there any subjects that you don't like Jack? ,M: I don't like physics very much. It's not easy to understand, most of the children are bored with it.
(A) F: Right, physics is very interesting, but it hard to understand just like geography, so I don't like those subjects. (B) F: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (C) F: Well, that makes sense, but at least you like the geography, that subject is really interesting! (D) F: Yeah, you are right, I agree with you that the physics is really difficult to learn.
Output:
D