A capacitor of capacitance $2 \mu \mathrm{~F}$ is charged with the help of a 60 V battery. After disconnecting the battery, if this capacitor is connected in parallel with another uncharged capacitor of capacitance $1 \mu \mathrm{~F}$, then the potential difference across the plates of $2 \mu \mathrm{~F}$ capacitor is

• A

  30 V
• B

  60 V
• Correct answer
  C

  40 V
• D

  20 V

Hence, the correct answer is option: 'C'.