96. A positive charge +Q located at the origin produces an electric field E0 at point P(x=+1,y=0). A negative charge -2 Q is placed at such a point as to produce a net field of zero at point P . The second charge will be placed on the
(A) x-axis where x>1
(B) x -axis where x<0
(C) y-axis where y>0
(D) y-axis where y<0