The Potential (Relative to Infinity)at the Midpoint of a Square

Multiple Choice

The potential (relative to infinity) at the midpoint of a square is 3.0 V when a point charge of +Q is located at one of the corners of the square.What is the potential (relative to infinity) at the center when each of the other corners is also contains a point charge of +Q?

A) 0 V
B) 3.0 V
C) 9.0 V
D) 12 V