To Shear a Cube-Shaped Object, Forces of Equal Magnitude and Opposite

Multiple Choice

To shear a cube-shaped object, forces of equal magnitude and opposite directions might be applied:

A) to opposite faces, perpendicular to the faces
B) to opposite faces, parallel to the faces
C) to adjacent faces, perpendicular to the faces
D) to adjacent faces, neither parallel nor perpendicular to the faces
E) to a single face, in any direction