A parallel plate capacitor of capacitance $90\; pF$ is connected to a battery of emf $20V$. If a dielectric material of dielectric constant $K = \frac{5}{3}$ is inserted between the plates, the magnitude of the induced charge will be :

Question

( A ) 1.2 nC
( B ) 2.4 nC
( C ) 0.3 nC
( D ) 0.9 nC