26. Glucose labeled with in C-3 and C-4 is completely converted to acetyl-CoA via glycolysis and the pyruvate dehydrogenase complex. What percentage of the acetyl-CoA molecules formed will be labeled with , and in which position of the acetyl moiety will the  label be found?
(A) 100% ofthe acetyl-CoA will be labeled at C-1 (carboxyl).
(B) 100% of the acetyl-CoA will be labeled at C-2.
(C) 50% of the acetyl-CoA will be labeled, all at C-2 (methyl).
(D) No label will be found in the acetyl-CoA molecules.
(E) Not enough information is given to answer this question.

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