Correct option is C
On the Moon, objects fall freely under the influence of gravity. Acceleration due to gravity on the Moon is constant for all objects, regardless of their masses. This means that if two objects with different masses are dropped from the same height, they will fall at the same rate and reach the ground simultaneously, assuming no air resistance (which is negligible on the Moon due to the lack of atmosphere). Therefore, they will have the same velocity at any instant while falling.