The library in the school isn't large.There're only ___books

題目：

The library in the school isn't large.There're only ___books in it.
A. six thousand, five hundred and forty-one
B. six thousands and five hundreds and forty-one
C. six thousands, five hundred forty and one
D. six thousand, five hundreds and fourth-one

解答：

D,千、百後面加s的