The Figure Shows a Block of Mass M

Multiple Choice

The figure shows a block of mass m resting on a slope. The block has coefficients of friction with the surface of the slope. It is connected using a very light string over an ideal pulley to a hanging block of mass 2.0 kg. The string above the slope pulls parallel to the surface. What is the minimum mass m so the system will remain at rest when it is released from rest?

A) 3.3 kg
B) 2.1 kg
C) 1.3 kg
D) 3.6 kg