Two Point Charges Are Located at Two of the Vertices

Two point charges are located at two of the vertices of a right triangle, as shown in the figure. If a third charge -q is brought from infinity and placed at the third vertex, what will its electric potential energy be? Use the following values: a = 0.35 m; b = 0.65 m, and q = 3.0 × 10^-6 C.

A) -1.7 J
B) -0.14 J
C) -0.028 J
D) +0.85 J
E) +1.7 J