Which of the following are peroxo acids of sulphur?

  • A
    $H_2SO_5, H_2SO_3$ and $H_2S_2O_8$
  • B
    $H_2SO_4, H_2S_2O_8$ and $H_2SO_3$
  • C
    $H_2S_2O_7, H_2SO_3$ and $H_2SO_4$
  • D
    $H_2S_2O_8$ and $H_2SO_5$

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