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Three concentric spherical shells have radii `a, b` and `c(a lt b lt c)` and have surface charge densities `sigma`, `-sigma` and `sigma` respectively. If `V_(A), V_(B)` and `V_(C)` denote the potentials of the three shells, then for `c = q + b`, we have

A

`V_(C)=V_(B)neV_(A)`

B

`V_(C)neV_(B)neV_(A)`

C

`V_(C)=V_(B)=V_(A)`

D

`V_(A)=V_(C)gtV_(B)`

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The correct Answer is:
D
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