The graph shows the number of hours Stan worked on a school project. For how many hours in total did he work on the project?

**Answer Choices**

A. 6

B. 2

C. 8

D. 9

E. 10

The graph shows the number of hours Stan worked on a school project. For how many hours in total did he work on the project?

**Answer Choices**

A. 6

B. 2

C. 8

D. 9

E. 10