A sphere a ring and a disc of same mass and radius are allowed to roll down three similar sufficiently rough inclined planes as shown in the figure from same height.
Which of the following order is true for frjctional force acting on the bodies during their rolling?
A. sphere `gt` disc `gt` ring
B. ring `gt` disc `gt` sphere
C. disc `gt` ring `gt` sphere
D. disc = ring = sphere
