Consider the reaction shown below.

2 MnSO₄ + 5 PbO₂ + 3 H₂SO₄ 2 HMnO₄ + 5 PbSO₄ + 2 H₂O

Which atom was oxidized in this reaction? [ Select ] [S, Pb, Mn, H, O]

Which atom was reduced in this reaction? [ Select ] [Mn, H, O, S, Pb]

Which substance was the oxidizing agent? [ Select ] [PbSO4, HMnO4, H2O, MnSO4, H2SO4, PbO2]

Which substance was the reducing agent? [ Select ] [H2O, PbSO4, HMnO4, MnSO4, PbO2, H2SO4]