70. Carbon dioxide (CO2) is released during which of the following stages of cellular respiration?
(A) oxidation of pyruvate to acetyl CoA and the citric acid cycle
(B) glycolysis and the oxidation of pyruvate to acetyl CoA
(C) fermentation and glycolysis
(D) the citric acid cycle and oxidative phosphorylation
(E) oxidative phosphorylation and fermentation