Equal charges `q` are placed at the vertices `A` and `B` of an equilatral triangle `ABC` of side `a`. The magnitude of electric field at the point `C` is
A. `(q)/(4piepsilon_(0)a^(2))`
B. `(sqrt(2)q)/(4piepsilon_(0)a^(2))`
C. `(sqrt(3)q)/(4piepsilon_(0)a^(2))`
D. `(q)/(2piepsilon_(0)a^(2))`