In the diagram, all triangles are equilateral. The total number of equilateral triangles of any size is

**Answer Choices**

A. 18

B. 20

C. 24

D. 26

E. 28

In the diagram, all triangles are equilateral. The total number of equilateral triangles of any size is

**Answer Choices**

A. 18

B. 20

C. 24

D. 26

E. 28