$A$ constant current flows in a horizontal wire in the plane of the paper from east to west as shown in the figure. The direction of the magnetic field at a point will be North to South:

• A
  directly below the wire
• B
  directly above the wire
• C
  at a point located in the plane of the paper,on the north side of the wire
• D
  at a point located in the plane of the paper,on the south side of the wire