(a) $H_2O_2 + O_3 \to H_2O + 2O_2$ (b) $H_2O_2 + Ag_2O \to 2Ag +H_2O + O_2$ Role of hydrogen peroxide in the above reactions is respectively :

Question

( A ) reducing in (a) and (b)
( B ) oxidizing in (a) and (b)
( C ) reducing in (a) and oxidizing in (b)
( D ) oxidizing in (a) and reducing in (b)