I need the answer as soon as possible

= 3. A charge +q is fixed at each of the o points x = x0, x = 3x0, x = 5xo ... x = 00 on the X-axis and a charge -9 is fixed at each of the points X = 2x0, x = 4x0, x =6x0 ... X = -0. Here, xo is a positive constants. Take the electric potential at a point due to Q a charge Q at a distancer from it to be Then the 4 or potential at the origin due to the above system of charges is 9 q ln2 (a) o (b) (C) 00 (d) 8 In2 4