Use the Following Figure to Answer the Next Problem

Multiple Choice

Use the following figure to answer the next problem: Two equal positive charges are placed x m apart.The equipotential lines are at 100 V interval.
-The potential at a point due to a unit positive charge is found to be V.If the distance between the charge and the point is tripled,the potential becomes

A) V/3
B) 3V
C) V/9
D) 9V
E) 1/V²