Geometry

The answer is A. plane ADM.

Analyze each option based on the properties of planes in a rectangular box (cuboid):

For plane :

In the given cuboid, points  and  are on the bottom - front edge. Point  is on the vertical edge on the front side of the box. Since three non - collinear points (, , and ) determine a plane, and these points are located on the front - facing surface of the box, plane  represents the front of the box.

For plane :

Point  is at the bottom - left corner, point  is at the top - left corner of the front - left edge, and point  is at the top - left corner of the back - left edge. The plane formed by ,