Sara makes a staircase out of toothpicks as shown:

This is a 3 -step staircase and uses 18 toothpicks. How many steps would be in a staircase that used 180 toothpicks?

**Answer Choices**

A. 10

B. 11

C. 12

D. 24

E. 30

Sara makes a staircase out of toothpicks as shown:

This is a 3 -step staircase and uses 18 toothpicks. How many steps would be in a staircase that used 180 toothpicks?

**Answer Choices**

A. 10

B. 11

C. 12

D. 24

E. 30