单项选择题

Conversation 2
Questions 8 to 10 are based on the following conversation.
[听力原文]8-10
M: Hello, Mary. It’s John. I’ve got something to tell you about the delivery of computers.
W: Oh, yes. How is it coming along
M: Well, we have problems with the ABC computer company.
W: Really What kind of problem
M: They haven’t delivered the order on time.
W: Oh, no. Why not
M: I don’t know. Could you call them
W: Yes, of course. What’s the order number
M: It’s CPU3861. Mr. Peterson is the contact man.
W: All right. I will call you back later in the afternoon.

Why did John make the call()

A.He wants to check the order number.
B.He wants to order some computers.
C.He wants to report on a problem.
D.He wants to see the secretary.