单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.
What is the main topic of the conversation

A.How to have fun in summer.
B.How to make money during summer break.
C.How to keep the family business during summer break.
D.Tentative plans for summer break.