Plane STL and plane Z would intersect at XL. Option B
The intersection of planes refers to the geometric concept where two or more planes in three-dimensional space meet or coincide at a common line, point, or another plane.
When two planes intersect, their intersection forms a line. This intersection line is where the two planes share points in common.
If three planes intersect at a point, that point is the common intersection of all three planes.
From the diagram shown, we have that;
Plane STL and plane Z would intersect at XL