Given the task definition and input, reply with output. 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.

M: Excuse me, I'm looking for some English textbooks. ,F: They're right over there under the dictionaries on the second shelf from the top. ,M: Do you have any textbooks to help improve students reading skills? ,F: Let's see. These books here focus on grammar and those are mainly for conversation practice. Here you are. This book has short passages for students to read an answer questions about.
(A) M: So, you mean those books are mainly for conversation practice? Oh, that's great. I need some books for reading practice. (B) M: Really? You mean those books are not mainly for conversation practice? But I just need some books for conversation practice. (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: You mean this book has long passages to read an answer questions about? Oh, I just need some books for reading practice.
A