A body of mass $$m$$ is taken from the surface of the earth to a height equal to twice the radius of earth$$(R_e)$$. The increase in potential energy will be  :
(g is acceleration due to gravity at the surface of earth) 

A

$$\frac{1}{2}mgR_e$$

B

$$\frac{3}{4}mgR_e$$

C

$$\frac{1}{4}mgR_e$$

D

$$\frac{2}{3}mgR_e$$