Identical 2 $\mu$ C Charges Are Located on the Vertices of a Square

Multiple Choice

Identical 2.0- $\mu$ C charges are located on the vertices of a square with sides that are 2.0 m in length.Determine the electric potential (relative to zero at infinity) at the center of the square.

A) 38 kV
B) 51 kV
C) 76 kV
D) 64 kV
E) 13 kV