If one were to apply Bohr model to a particle of mass ‘m’ and charge ‘q’ moving in a plane under the influence of a magnetic field ‘B’, the energy of the charged particle in the nth level will be :

• A

  $\mathrm{n}\left(\frac{\mathrm{hqB}}{\mathrm{\pi m}}\right)$

• B

  $\mathrm{n}\left(\frac{\mathrm{hqB}}{8\mathrm{\pi m}}\right)$

• C

  $\mathrm{n}\left(\frac{\mathrm{hqB}}{2\mathrm{\pi m}}\right)$

• D

  $\mathrm{n}\left(\frac{\mathrm{hqB}}{4\mathrm{\pi m}}\right)$