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Four solid spheres are made to move on a...

Four solid spheres are made to move on a rough horizontal surface. Sphere `P` is given a spin and released. Sphere `Q` is given a forward linear velocity. Spheres `R` and `S` are given linear and rotational motions as shown in the figure. Directions of the friction force on spheres `P,Q,R,S` are respectively.
.

A

Right,Left,Right,Left

B

Right,Left,Left,Right

C

Left,Right,Left either Left or Right

D

Right,Left ,Left either Left or Right

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The correct Answer is:
D
In this case, friction would oppose the motion of lowest point (point of contact)
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