In which of the following reactions is $H_2O_2$ acting as a reducing agent?

  • A
    $2KI + H_2O_2 \to 2KOH + I_2$
  • B
    $2FeSO_4 + H_2SO_4 + H_2O_2 \longrightarrow Fe_2(SO_4)_3 + 2H_2O$
  • C
    $H_2SO_3 + H_2O_2 \longrightarrow H_2SO_4 + H_2O$
  • D
    $Ag_2O + H_2O_2 \longrightarrow 2Ag + H_2O + O_2$

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