Three charges each of magnitude `q` are placed at the corners of an equilateral triangle, the electrostatic force on the charge place at the centre is (each side of triangle is `L`)
A. Zero
B. `(1)/(4pi epsilon_(0))(q^(2))/(L^(2))`
C. `(1)/(4pi epsilon_(0))(3q^(2))/(L^(2))`
D. `(1)/(12pi epsilon_(0))(q^(2))/(L^(2))`