A 12 MF Capacitor Is Connected in Series with a 4

A 12 mF capacitor is connected in series with a 4 mF capacitor, the combination being connected across a 6 V power supply. The charge on the 12 mF capacitor is

A) 24 mC.
B) 12 mC.
C) 18 mC.
D) 72 mC.
E) 36 mC.