A、Take a class together with Mary. B、Ask Mary to help him choose a topic. C、Change the topic of his research project. D、Sign up

M: I’ve been taking four courses, but I think I’ll drop one of them at the end of this term.
W: That may be for the best. You should have done so earlier.
Q: What does the woman mean?

M: The research project from my political science course on the presidency is due in just two weeks. But there’s so much to talk about, I don’t know how to even begin to pick a subject.
W: You know, Mary is doing her graduate work in political science. She would certainly know how to narrow the topic down.
Q: What does the woman suggest the man do?