【单选题】

Questions 4 to 6 are based on the following conversation.At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation.

What are the students mainly discussingA．Places the man has visiteD、
B．A、paper the woman is writing for a class.
C．School activities they enjoy.
D．The woman’s plans for the summer.