The Block Shown Moves with Constant Velocity on a Horizontal

Multiple Choice

The block shown moves with constant velocity on a horizontal surface.Two of the forces on it are shown.A frictional force exerted by the surface is the only other horizontal force on the block.The frictional force is:

A) 0 N
B) 2 N, leftward
C) 2 N, rightward
D) slightly more than 2 N, leftward
E) slightly less than 2 N, leftward