Which Statement Is Always Correct When Applied to a Charge

Multiple Choice

Which statement is always correct when applied to a charge distribution located in a finite region of space?

A) Electric potential is always zero at infinity.
B) Electric potential is always zero at the origin.
C) Electric potential is always zero at a boundary surface to a charge distribution.
D) Electric potential is always infinite at a boundary surface to a charge distribution.
E) The location where electric potential is zero may be chosen arbitrarily.