[" Three concentric metallic "],[" spheres "A,B" and "C" have radii "],[a,b" and "c(a

Three concentric charged metallic spherical shells A, B and C have radii a,b and c, charge densities sigma,-sigma and sigma and potentials V_A,V_B and V_C respectively. Then which of the following relations is correct?

Three concentric spherical metallic spheres A,B and C of radii a , b and c(a lt b lt c) have surface charge densities sigma , -sigma and sigma respectively.

Three concentric spherical metallic spheres A,B and C of radii a , b and c(a lt b lt c) have surface charge densities sigma , -sigma and sigma respectively.

Three concentric metallic spherical shells A,B and C of radii a,b and c(a lt blt c) have surface charge densities +sigma ,-sigma and +sigma respectively ,the potential of shell B is

Three concentric metallic spherical shells A,B and C of radii a,b and c(a lt blt c) have surface charge densities -sigma ,+sigma and -sigma respectively ,the potential of shell A is

Three concentric metallic spherical shell A,B and C or radii a,b and c (a lt b lt c) have surface charge densities -sigma, + sigma and -sigma . Respectively. The potential of shel A is :

Three concentric metallic spherical shell A,B and C or radiin a, b and C (a lt bgt C) have surface charge densities - singama, + sigma , and - aigba respectively . The potential of shell A is :

Three concentric spherical metallic shells A, B and C of radii a, b and c (a (i) Find the potential of the three shells A, B and C. (ii) If the shells A and C are at the same potential, obtain the relation between the radii a, b and c.