Please solve question 11

11. Two positive and two negative charges are kept in x-y plane in free space as shown in the figure. The magnitude of electric field due to the system of charges at a point P(0, y) will be (y >> d) 

$$\begin{gathered} \left(\mathrm{A}\right) \frac{\sqrt{5}\mathrm{qd}}{4{\mathrm{\pi \epsilon }}_0{\mathrm{y}}^3} \\ \left(\mathrm{B}\right) \frac{2\mathrm{dq}}{4{\mathrm{\pi \epsilon }}_0{\mathrm{y}}^3} \\ \left(\mathrm{C}\right) \frac{\mathrm{dq}}{4{\mathrm{\pi \epsilon }}_0{\mathrm{y}}^3} \\ \left(\mathrm{D}\right) \frac{3\mathrm{dq}}{4{\mathrm{\pi \epsilon }}_0{\mathrm{y}}^3} \end{gathered}$$