Students can buy up to 10 books at a book fair. The cost of the books is shown in the graph. What is the domain of this graph?
A)all real Numbers
B)all whole numbers from 0 to 10
C.All rational numbers from 0 to 10
D. All nonnegative real numbers
![Students can buy up to 10 books at a book fair The cost of the books is shown in the graph What is the domain of this graph Aall real Numbers Ball whole numbers class=](https://us-static.z-dn.net/files/d0b/73500ee807c73bb4ad622f12b5f65bc8.png)