单项选择题
F: Do you have any experience in sales
M: Yes, I have done that kind of work.
F: Where do you work
M: I worked part-time as a car agent when I was in university.
F: How long have you been working there
M: For two years altogether.
A．He learned how to make cars in the university.
B．He worked as a salesman for a car agent.
C．He studied the sales strategy in a university.