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An iron ball and a wooden ball of the same radius are released from the same height in vacuum. They take the same time to reach the ground. The reason for this is

A)                 Acceleration due to gravity in vacuum is same  irrespective of the size and mass of the body

B)             Acceleration due to gravity in vacuum depends upon the mass of the body

C)             There is no acceleration due to gravity in vacuum

D)             In vacuum there is a resistance offered to the motion of the body and this resistance depends upon the mass of the body