Definition: 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.
Input: F: Good morning, sir. How can I help you? ,M: I'd like to rent a car for the weekend. ,F: Certainly. Do you have a reservation? ,M: No, I'm afraid I don't. ,F: Well, let me see. You're in luck, I have a few cars left. What size car would you like? ,M: Let's see. We have four adults. Have you got any midsize cars?
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: Yes, we have, so you plan to rent a small car this Wednesday, right? (C) F: Why do you want to rent a middle car? You have only three adults. (D) F: OK, you have four adults, so it's reasonable to rent a middle car.

D