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 teh charge `(-q)` is
A. `(1)/(4pi epsilon_(0)) (Qq)/(l)`
B. `(1)/(4pi epsilon_(0)) (Qq)/(l^(2))`
C. `(1)/(4pi epsilon_(0))Qql`
D. Zero
