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

W: What do you think about the teachers, John? M: Honestly, I like most of them, except my Chinese teacher. She is quite young, but her class is too boring!, Question: Why doesn't John like his Chinese teacher? (A) She is too young. (B) Her class is too boring. (C) Chinese isn't his favorite class.
(B) Her class is too boring.