A Large 1 M by 1 M Sheet Conductor in the X-Y

Multiple Choice

A large 1 m by 1 m sheet conductor in the x-y plane carries a uniform current flowing in the x-direction.The current density is 1.7 A/cm.What is the direction of the magnetic field just above the center of the sheet at z = 2 mm (not close to any edges) .

A) positive x-direction
B) negative x-direction
C) positive y-direction
D) negative y-direction
E) positive z-direction