Essential difference between electrostatic shielding by a conducting shell and magnetostatic shielding is due to

Options

A. electrostatic field lines can end on charges and conductors have free charges
B. lines of B can also end but conductors cannot end them
C. lines of B cannot end on any material and perfect shieldin g is not possible
D. shells of high permeability can be used to divert lines of B from the interior region.

Explanation

Electrostatic shielding is the phenomenon to block the effects of an electric field. The conducting shell can block the effects of an external field on its interanl content or the effect of an internal held on the outside environmen t.
Magnetostatic shielding is done by using an enclosure made of a high permeability magnetic material to prevent a static magnetic field outside the enclosure from reaching objects inside it or to confine a magnetic field within the enclosure.