Two charges 14μC and −4μC are placed at (-12 cm, 0, 0) and (12 cm, 0, 0) in an external electric field E=(Br²) , where B=1.2×106N/(cm²) and r is in metres. The electrostatic potential energy of the configuration is_______
A 97.9 J
B 102.1 J
C 2.1 J
D -97.9J