$SO_2$ acts as a temporary bleaching agent,whereas $Cl_2$ acts as a permanent bleaching agent. Why?

  • A
    $Cl_2$ bleaches due to reduction,while $SO_2$ bleaches due to oxidation.
  • B
    $Cl_2$ bleaches due to oxidation,while $SO_2$ bleaches due to reduction.
  • C
    Both $(A)$ and $(B)$.
  • D
    None of these.

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