Physics · Electrostatic Potential

Consider the following statements regarding conductors in electrostatic equilibrium: (A) The electric field is zero everywhere inside the bulk of a conductor. (B) The electrostatic field at the surface of a charged conductor is tangential to the surface. (C) The entire volume of a conductor is an equipotential region. (D) Any excess static charge resides entirely on the outer boundary surface. Which of the above statements are correct?

1. A
   (A), (C) and (D) only
2. B
   and (B) only
3. C
   (B), (C) and (D) only
4. D
   (A), (B), (C) and (D)