For the Reaction That Occurs in a Lead Storage Battery

Multiple Choice

For the reaction that occurs in a lead storage battery,
Pb(s) + PbO₂(s) + 2H⁺(aq) + 2HSO₄^-(aq) → 2PbSO₄(s) + 2H₂O(l)
The oxidizing agent is

A) HSO₄^-.
B) PbSO₄.
C) Pb.
D) PbO₂.
E) H⁺.