听力原文：W: Hello! Is this Mike's Auto Repair Shop?
M: Yes, it is. Can I help you?
W: Yes, please. This is Mrs. Jones. I'm calling about my car. Has it been repaired yet?
M: Not yet. But you can come by at four o'clock. I'm sure it'll be ready then.
What is the most probable relationship of the two people?
A．Lawyer and client.
B．Teacher and student.
C．Mechanic and customer.
D．Salesman and customer,

A.
What
B.Lawyer
C.
B．Teacher
D.
C．Mechanic
E.
D．Salesman