Both a 50-Kg Sack Is Lifted 2 Meters from the Ground

Multiple Choice

Both A 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time. The power expended in raising the 50-kg sack is

A) half as much.
B) the same.
C) twice as much.
D) impossible to predict without further information