Answer:
Option C.

Explanation:
we know that
The volume of the solid Eva created is equal to the volume of the triangular prism minus the volume of the rectangular prism notch
step 1
Find the volume of the triangular prism
The volume is equal to

where
B is the area of the triangular base
h is the height of the triangular prism
substitute

step 2
Find the volume of the rectangular prism notch
The volume is equal to

step 3
Find the volume of the solid Eva created
