The figure shows a capacitor of capacitance $\mathrm{C}$ connected to a battery via a switch, having a total charge $\mathrm{Q}$ on it, in steady-state. When the switch $\mathrm{S}$ is turned from position $\mathrm{A}$ to position $\mathrm{B}$, the energy dissipated in the circuit is

• A

  $\frac{1}{8}\frac{{\mathrm{Q}}^2}{\mathrm{C}}$
• Correct answer
  B

  $\frac{3}{8}\frac{{\mathrm{Q}}^2}{\mathrm{C}}$
• C

  $\frac{3}{4}\frac{{\mathrm{Q}}^2}{\mathrm{C}}$
• D

  $\frac{5}{8}\frac{{\mathrm{Q}}^2}{\mathrm{C}}$

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