A pulley of radius 2 m is rotated about its axis by a force `F = (20 t-5 t^2)` newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is `10 kg m^2`, the number of rotations made by the pulley before its direction of motion is reserved, is

Options

A. less than 3
B. more than 3 but less than 6
C. more than 3 but less than 9
D. more than 9