听力原文：M: I came to talk to you about transferring my major out of the math department.
W: Let's see. You're a sophomore now, aren't you ？ Why do you want to change majors？
M: On the final test in my calculus class I got a pretty poor score, I knew the material, but I made a small mistake early in the equation, so all the rest of the answers were wrong, too.
W: Didn't you discuss this with your instructor？
M: I didn't bother. We never got along too well. Besides, I really don't want to face this kind of pressure on every test till I graduate.
W: So what major do you want to change to？
M: I love psychology, but you need a Ph.D. to get any kind of a good job. So I thought sociology would be next best, and there is reasonable employment available for someone with a B.A.
W: Yes, that's true. And you could feasibly apply your math credits to a math minor.
M: So is it possible to change my major？
W: It seems reasonable to me, but you will need approval from the department head to get in.
(23)

A. Pass his math class.
B. Get a good job.
C. Get his degree.
D. Change his field of study.