Which Statement Is True Concerning Aerobic Versus Anaerobic Metabolism

Which statement is true concerning aerobic versus anaerobic metabolism?

A) Aerobic metabolism is much more efficient than anaerobic metabolism.
B) Both metabolism methods produce the same amount of energy.
C) Both metabolism methods yield carbon dioxide.
D) All multicellular organisms are anaerobic.
E) In both methods of metabolism much of the energy is lost as heat.