In the diagram, the 5\times6 grid is made out of thirty 1\times1 squares. What is the total length of the six solid line segments shown?

**Answer Choices**

A. 6

B. 12

C. 16

D. 18

E. 20

In the diagram, the 5\times6 grid is made out of thirty 1\times1 squares. What is the total length of the six solid line segments shown?

**Answer Choices**

A. 6

B. 12

C. 16

D. 18

E. 20