A copper rod is suspended in a non-homogeneous magnetic field region. The rod when in equilibrium will align itself

• A

  in the region where the magnetic field is strongest

• B

  in the region where the magnetic field is weakest and parallel to the direction of magnetic field there

• C

  in the direction in which it was originally suspended

• D

  in the region where the magnetic field is weakest and perpendicular to the direction of magnetic field there