The Figure Shows Two Boxes, with M₁ > M₂, That $\overrightarrow { \mathbf { F } }$

Multiple Choice

The figure shows two boxes, with m₁ > m₂, that are on a level frictionless surface. We can apply a horizontal force $\overrightarrow { \mathbf { F } }$ either toward the right on m₁ or toward the left on m₂. The magnitude of the force that the boxes exert on each other is

A) zero newtons in either case.
B) larger if $\overrightarrow { \mathbf { F } }$ is applied toward the right.
C) larger if $\overrightarrow { \mathbf { F } }$ is applied toward the left.
D) the same in either case.