What is the basic reaction in the battery of the ignition system?

• A. PbO5 + Pb + 4H2SO4 = 4PbSO2 + 4H20
• B. 2PbO2 + 2H2SO4 = 2PbO + 2SO4 + 2H2O + O2
• C. PbO2 + Pb + 2H2SO4 = 2PbSO4 + 2H2O
• D. PbO2 + 2H2SO4 = 2PbSO4 + 2H2O