A Block Is Placed on an Inclined Plane with an Angle

Multiple Choice

A block is placed on an inclined plane with an angle of inclination $\theta$ in degrees) with respect to horizontal. The coefficient of static friction between the block and the inclined plane is 0.7. For what maximum value of $\theta$ will the block remain stationary on the inclined surface?

A) 35^o
B) 82^o
C) 44^o
D) 30^o
E) 18^o