Four capacitors and a battery are connected as shown. The potential drop across the 7 µF capacitor is 6 V. Select the correct statements.

Select all that apply

• Option A

  Potential difference across the 3 µF capacitor is 10 V

• Option B

  Charge on the 3 µF capacitor is 42 µC

• Option C

  The emf of the battery is 30 V

• Option D

  Potential difference across the 12 µF capacitor is 10 V