A plank with a uniform sphere placed on it resting on a smooth horizontal plane. Plank is pulled to right by a constant force `F`. If sphere does not slip over the plank. Which of the following is incorrect?
A. Acceleration of the centre of sphere is less than that of the plank
B. Work done by fricition acting on the sphere is equal to its total kinetic energy
C. Total kinstic energy of the system is equal to work done by the force F
D. None of the above
