In the given figure,find the charge on the capacitor of capacitance $C$.

  • A
    $CE$
  • B
    $\frac{CE R_1}{R_2 - r}$
  • C
    $\frac{CE R_2}{R_2 + r}$
  • D
    $\frac{CE R_1}{R_1 - r}$

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