A 60-μF Air Capacitor Is Connected Across a 100-V Battery

A 6.0-μF air capacitor is connected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5) . How much additional charge flows from the battery, which remained connected during the process?

A) 1.2 mC
B) 1.5 mC
C) 1.7 mC
D) 2.1 mC
E) 2.5 mC