Question

Given the intersection of a pyramid and a plane with a trapezoidal cross section.

Which option is true about the plane of intersection?
The pyramid is cut with a plane parallel to the base.
The pyramid is cut with a plane passing through the top vertex and perpendicular to the base.
The pyramid is cut with a plane perpendicular to the base, but not through the top vertex.
The pyramid is cut with a plane passing through the top vertex and not perpendicular to the base.