Three identical metal plates are kept parallel to one another at seperation $d_1\; and\; d_2$ If both the outer plates are connected to ground and middle plate is given charge q, The charge on right side of middle plate will be :

Question

$(A)\;\frac{q}{2} \\ (B)\;\frac{qd_1}{d_1+d_2} \\ (C)\; \frac{qd_2}{d_1+d_2} \\ (D)\;none$