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(D) Due to translational motion only,the friction force $f^{\prime}$ should act backwards to oppose the sliding tendency.Due to rotational motion only

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Cannot be interpreted.

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(D) Due to translational motion only,the friction force $f^{\prime}$ should act backwards to oppose the sliding tendency.Due to rotational motion only,the torque produced by the force $F$ (applied above the centre of mass $C$) causes a tendency to rotate,which creates a friction force $f^{\prime \prime}$ acting forwards at the point of contact.Thus,the direction of the net friction force depends on the relative magnitudes of $f^{\prime}$ and $f^{\prime \prime}$.Since the exact height of the point of application of force $F$ above the centre of mass $C$ is not specified,the relative magnitudes of these opposing friction components cannot be determined.Therefore,the direction of the net friction force cannot be interpreted.

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