The reaction in which hydrogen peroxide acts as a reducting agent is .
A. `PbS + 4H_(2)O_(2) rarr PbSO_(4) + 4H_(2)O`
B. `2KI + H_(2)O_(2) rarr 2KOH + I_(2)`
C. `2FeSO_(4) + H_(2)SO_(4) + H_(2)O_(2) rarr Fe_(2)(SO_(4))_(3) + 2H_(2)O`
D. `Ag_(2)O + H_(2)O_(2) rarr 2Ag +H_(2)O +O_(2)`
