A drum of radius R and mass M rolls down without slippping along an inclined plane of inclination θ. Then identify the correct statement

A. Frictional force acting on drum will dissipate energy as heat.
B. Frictional force acting on drum will oppose the rotational motion of the drum.
C. Frictional force acting on drum will oppose the translational as well as the rotational motion of drum.
D. Gravitational Potential energy of drum is 100% transformed into translational and rotational K.E of drum.