A thin spherical insulating shell of radius R carries a uniformly distributed charge such that the potential at its surface is Vo. A hole with a small area a4R(a < < 1) is made on the shell without affecting the rest of the shell. Which one of the following statements is correct? A. The magnitude of electric field at a point, located on a line passing through the hole and shell's center, a V on a distance 2R from the center of the spherical shell will be reduced by 2R a Vo B. The magnitude of electric field at the center of the shell is reduced by 2R 1 C. The ratio of the potential at the center of the shell to that of the point at -R from center towards the 1- 1-2 D. The potential at the center of the shell is reduced by 2a Vo hole will be