单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A.He refuses to check in the other suitcase.
B.He only has one suitcase, and one of the suitcases he’s carrying isn’t his.
C.He thinks the woman up ahead should check in the suitcase.
D.He’s helping the woman up ahead to check in the suitcase.