A uniform current density j flows inside an infinity plate of thickness "2d" parallel to it's surface.The magnetic field induction is A) `mu_(0)jx` inside the plate at a distance of ' "x" ' from median plane. B) `(mu_(0)j)/(2x)` inside the plate at a distance of ' "x" ' from median plane C) `mu_(0)jd` out side the plate D) `2 mu_(0)jd` out side the plate