A bar magnet is oscillating in a uniform magnetic field of induction `0.4xx10^(-5)T`. When the frequency of the oscillating bar magnet is double due to increasing magnetic field, the increase in magnetic induction is
A. `1.2xx10^(-4)T`
B. `1.2xx10^(-5)T`
C. `1.6xx10^(-4)T`
D. `1.6xx10^(-5)T`