In which of the following reactions, `H_(2)O_(2)` act as a reducing agent ?
A. `PbO_(2(s))+H_(2)O_(2(aq))rarrPbO_((s))+H_(2)O_((1))+O_(2(g))`
B. `PbO_(2(s))+H_(2)O_(2(aq))rarrPbO_((s))+H_(2)O_((1))+O_(2(g))`
C. `2KI_((aq))+H_(2)O_(2(aq))rarr2KOH_((aq))+I_(2(s))`
D. All the above
