In a place e.m. wave, the electric field oscillates sinusoidally at a frequency of $2.5\times {10}^{10}\mathrm{Hz}$ and amplitude $480{\mathrm{Vm}}^{-1}.$  The amplitude of oscillating magnetic field will be :

• A

  $1.52\times {10}^{-8}{\mathrm{Wbm}}^{-2}$

• B

  $1.52\times {10}^{-7}{\mathrm{Wbm}}^{-2}$

• C

  $1.6\times {10}^{-6}{\mathrm{Wbm}}^{-2}$

• D

  $1.6\times {10}^{-7}{\mathrm{Wbm}}^{-2}$