The work done by a force:

Is independent of the frame of reference

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Is same in all reference-frames

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Is same in all inertial frames

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None of these

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Solution

The correct option is D None of these
The work done by a a force depends on frame of reference. If force is applied against the gravitation then work is said to be done, while if the force is applied in the direction of gravity then the work done is said to be zero, Hence work done by the force is dependent of the frame of reference.
All other options contradicts the propertities of work done by force and hence are invalid.

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