Two charges $$7\mu c$$ and $$-4\mu c$$ are placed at (−7 cm, 0, 0) and (7 cm, 0, 0) respectively. Given, $$\epsilon_{\circ}=8.85\times 10^{-12}C^{2}m^{-2}$$, the electrostatic potential energy of the charge configuration is :

A

-1.8 J

B

-2.0 J

C

-1.5 J

D

-1.2 J