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 happens if Adams stops at Perth

A.He can’t meet his friends.
B.The flight goes without him.
C.He has to pay more than 795 pounds.
D.He can’t stop at Hong Kong then.