Why does the oxidation of organic compounds by molecular oxygen to produce CO₂ and water release free energy?

AThe covalent bonds in organic molecules and molecular oxygen have more kinetic energy than the covalent bonds in water and carbon dioxide.
BElectrons are being moved from atoms that have a lower affinity for electrons (such as
Cto atoms with a higher affinity for electrons (such as O).
CThe oxidation of organic compounds can be used to make ATP.
DThe electrons have a higher potential energy when associated with water and CO₂ than they do in organic compounds.
EThe covalent bond in O₂ is unstable and easily broken by electrons from organic molecules.