Two point charge `q_(1)=2muC` and `q_(2)=1muC` are placed at distance `b=1` and `a=2cm` from the origin on the `y` and `x` axes as shown in figure .The electric field vector at point `(a),(b)` will subtnd on angle `theta` with the "x-axis" given by
A. `tantheta=1`
B. `tan theta=2`
C. `tan theta=3`
D. `tantheta=4`