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