Which Statement About NAD⁺ and NADH Is TRUE?
A) NADH $\alpha$

Which statement about NAD⁺ and NADH is TRUE?

A) NADH inhibits the pyruvate dehydrogenase complex.
B) NAD⁺ is oxidized to NADH by the $\alpha$ -ketoglutarate dehydrogenase complex.
C) NAD⁺ is a coenzyme for two of the enzymes in the pyruvate dehydrogenase complex.
D) NAD⁺ is oxidized to NADH by isocitrate dehydrogenase.
E) NAD⁺ is oxidized to NADH by both isocitrate dehydrogenase and the $\alpha$ -ketoglutarate dehydrogenase complex.