Answer;
137.5 cubic units.
Step-by-step explanation:
The volume of the triangular prism can be calculated as:

Where b is the base and h is the height of the triangular face, and H is the height of the prism.
So, replacing b by 5 units, h by 5 units, and H by 11 units, we get:

Therefore, the volume of the triangular prism is 137.5 cubic units.
So, the answer is D. 137.5 cubic units.