22. A young animal has never had much energy. He is brought to a veterinarian for help and is sent to theanimal hospital for some tests. There they discover his mitochondria can use only fatty acids and aminoacids for respiration, and his cells produce more lactate than normal. Of the following, which is the bestexplanation of his condition?
(A) His mitochondria lack the transport protein that moves pyruvate across the outer mitochondrialmembrane.
(B) His cells cannot move NADH from glycolysis into the mitochondria.
(C) His cells contain something that inhibits oxygen use in his mitochondria.
(D) His cells lack the enzyme in glycolysis that forms pyruvate.