A particle crossing the origin of co-ordinates at time t = 0, moves in the xy-plane with a constant acceleration a in the y-direction. If its equation of motion is y = bx2 (b us a constant), its velocity component in the x-derection is
(a) √2b/a
(b) √a/2b
(c) √a/b
(d) √b/a
(e) √ba