Figure 44 the Figure Shows Two Bodies of Masses M

Figure 4.4 The figure shows two bodies of masses M and m, M placed on a horizontal surface and m hanging at the side, connected by a light cord over a massless and frictionless pulley.
-In Fig. 4.4, the masses are M = 3 kg and m = 5 kg. What is the minimum coefficient of static friction between the horizontal surface and M such that the system is NOT moving?

A) 0.5
B) 0.6
C) 0.7
D) 1.7