The gravitational potential of two homogeneous spherical shells `A` and `B` of same surface density at their respective centres are in the ratio `3:4`. If the two shells collapse into a single one such that surface charge density remains the same, then the ratio of potential at an internal point of the new shell to shell `A` is equal to

Options

A. `3 : 5`
B. `4 : 5`
C. `5 : 3`
D. `5 : 4`

Answer

C