The total magnetic flux in a material, which produces a pole of strength m_p when a magnetic material of cross-sectional area A is placed in a magnetic field of strength H, will be

• A

  ${\mathrm{\mu }}_0\left(\mathrm{AH}+{\mathrm{m}}_{\mathrm{p}}\right)$

• B

  ${\text{μ}}_0\mathrm{AH}$

• C

  ${\mathrm{\mu }}_0 {\mathrm{m}}_{\mathrm{p}}$

• D

  ${\mathrm{\mu }}_0\left({\mathrm{m}}_{\mathrm{p}}\mathrm{AH}+\mathrm{A}\right)$