A reaction occurring in a lead/acid cell is given below. $\text{Pb}(s) + \text{PbO}_2(s) + 4\text{H}^+(aq) + 2\text{SO}_4^{2-}(aq) \rightarrow 2\text{PbSO}_4(s) + 2\text{H}_2\text{O}(l)$ Which statement correctly describes this reaction?
- ALead is both oxidised and reduced.
- BLead is neither oxidised nor reduced.
- CLead is oxidised only.
- DLead is reduced only.