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: M: This book with a green cover is $20 and the one with the blue cover is $15 more, and the red one is twice as expensive as this one. ,F: I like the one with the blue cover but I can't afford it right now. Sorry.
(A) M: The red one is the most expensive. (B) M: Excuse me, could you repeat the question? (C) M: The blue one is the most expensive. (D) M: The red one is the most cheap one.

A