An isolated metallic object is charged in vacuum to a potential $$V_0$$ using a suitable source, its electrostatic energy being $$W_0$$. It is then disconnected from the source and immersed in a large volume of dielectric with dielectric constant $$K$$. The electrostatic energy of the sphere in the dielectric is

A

$$K^2 W_0$$

B

$$K W_0$$

C

$$\frac{W_0}{K^2}$$

D

$$\frac{W_0}{K}$$