In the circuit given, the charge on the capacitor is

• A

  $C E$
• Correct answer
  B

  $\frac{C E R_1}{R_1+r}$
• C

  $\frac{\mathrm{CER}_2}{\mathrm{R}_1+\mathrm{r}}$
• D

  $\frac{\mathrm{CER}_1}{\mathrm{R}_2+\mathrm{r}}$

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