Answer:
Figure B
Step-by-step explanation:
In order to get 3 of the triangles if the shape were to be cut horizontally, you need a shape with a triangle base, and a prism.
In this case, figure B contains both of those requirements.
The Corect answer would be B
If you slice a triangler prism horizontally, and look at it from the top, it will look like a 2D triangle
