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: Sorry, I'm a bit late. So have you worked out what to do with this homework? ,M: Not yet. I've just been here myself. ,F: Can you remind me just what the task is exactly? ,M: Well, there are 2, no, 3 parts. First, we've got to write an essay about ways of collecting data. Then... ,F: What's the title of the essay exactly? ,M: I've got it here. Discuss the 2 main methods of collecting data in social science research. ,F: And how many words do we have to write? ,M: 1500 words. Then for the second part of the homework, we have to choose one method of data collection and carry a small scale study.
(A) F: We need to write fifty hundred words? That's a lot. (B) F: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (C) F: That's OK. All we have to do is writing an essay with fifteen hundred words, and we can finish our homework then. (D) F: Oh, we only need to write fifteen hundred words.
Output:
D