A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre
A. Increases as r increases for r < R and for r > R
B. Zero as r increases for r < R, decreases as r increases for r > R
C. Zero as r increases for r < R, increases as r increases for r > R
D. Decreases as r increases for r < R and for r > R
