A、She does not take enough money. B、She does not like the books. C、She plans not to take the classes. D、She did not see the list

M: Did you see the list of books for this course?
W: Yes,the teacher expects us to get the first five on the list.
M: Are you going to buy them?
W: I don’t know. These books are expensive. And I don’t have a lot of money on me.
M: How about sharing them with me?
W: Sounds good.
M: Let’s do this. I will buy three and you buy two of them.
W: I would rather do it this way:we pay fifty-fifty for the books now.
M: And Then?
W: At the end of the course you can take the books you like and I will take the ones I like.
M: What if we both like the same books?
W: Come on,we are not going to argue over that,are we?
M: I was just joking. It’s definitely a better idea.
W: Then let’s get the books as soon as possible.
8．How many books do they have to buy?
Why does not the woman buy all the books by herself?
How will they pay for the books?