A block of mass m is on an inclined plane of angle 0. The coefficient of friction between the block and the plane is and tan 0> . The block is held stationary by applying a force P parallel to the plane. The direction of force pointing up the plane is taken to be positive. As P is varied from P = mg(sine - cose) to P = mg(sine + cose), the frictional force f versus P graph will look like A) f B) P P IN A P C) f4 Pi P2 P D) f f4 P P P P P P