Three Identical Point Charges (+2

Multiple Choice

Three identical point charges (+2.0 nC) are placed at the corners of an equilateral triangle with sides of 2.0-m length. If the electric potential is taken to be zero at infinity, what is the potential at the midpoint of any one of the sides of the triangle?

A) 16 V
B) 10 V
C) 70 V
D) 46 V
E) 44 V