Detailed Instructions: In this task, you will be shown a conversation and a question. You need to answer the question and choose the correct option based on the conversation. "W" and "M" in the conversations stand for "woman" and "man".
Q: M: Why did you buy so many books? W: The bookstore is celebrating its 5th anniversary, so there's a 35% discount on all books., Question: What is the discount rate of the books? (A) 30%. (B) 35%. (C) 13.5%.
A:
(B) 35%.