A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20V. If a dielectric material of dielectric constant `k=(5)/(3)` is inserted between the plates, the magnitude of the induced charge will be
A. 2.4 nC
B. 0.9 nC
C. 1.2 nC
D. 0.3 nC
