Water from a tap maintained at a potential V is allowed to drop in drops of radius a through a small hole in to a hollow conducting sphere of radius R until it fill it. The potential of the sphere will be :

Options

A. `(RV)/(a)`
B. `(R^(2)V^(2))/(a^(2))`
C. `(R^(2))/(a^(2))V`
D. `(V^(2))/(a^(2)R^(2))`