14. Which statement about the potential due to a positive charged conducting sphere in electrostatic equilibrium is true? All potentials are measured relative to infinity.
(A) The potential at the center of the sphere is zero.
(B) The potential at the surface of the sphere is lower than the potential at the center.
(C) The potential at the center is higher than the potential at the surface.
(D) The potential at the surface is lower than zero.
(E) None of the above.