A charge \[(-q)\] and another charge \[(+Q)\] are kept at two points A and B respectively. Keeping the charge \[(+Q)\] fixed at B, the charge \[(-q)\] at A is moved to another point C such that ABC forms an equilateral triangle of side l. The net work done in moving the charge \[(-q)\] is [MP PET 2001]

• A.            \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Qq}{l}\]
• B.                                      \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Qq}{{{l}^{2}}}\]
• C.            \[\frac{1}{4\pi {{\varepsilon }_{0}}}Qql\]
• D.                                      Zero