Consider the force F on a charge 'q' due to a uniformlycharged spherical shell of radius R carrying charge Q distributed uniformly over it. Which one of the following statements is true for F, if 'q' is placed at distacen r from the centre of the shell?

Options

A. `F = 1/(4piin_0)(Qq)/R^2 " for " r lt R`
B. `1/(4piin_0)(qQ)/R^2 gt F gt 0 " for "r lt R`
C. `F - 1/(4piin_0)(Qq)/r^2" for " r gt R`
D. `F = 1/(4 piin_0)(Qq)/r^2" for all r"`