M: Hello, Is that Mr. Chen? W: I'm sorry,

M: Hello, Is that Mr. Chen? W: I'm sorry, he is not avaliable now. W: There is something emergency. I need to get in touch with him right now. P: The only thing I can do is to leave a message for you. S: Ok. This is Guangzhou Baiyun International Airport.We have found the bag he lost two days ago, I need him to identify it. P: I will let him know as soon as he comes back., thank you. question:why dose the man called?

A.they want to invit Mr Chen to a party

B.they found Mr Chen's bag

C.they are making a questionare

D.they need Mr Chen's help

正确答案是B