44. Oxaloacetate uniformly labeled with14C (ie., with equal amounts of14C in cach of its carbon atoms) is condensed with unlabeled acetyl-CoA. After a single pass through the citric acid cycle back to oxaloacetate, what fraction of the original radioactivity will be found in the oxaloacetate?
(A) All
(B) 1/2
(C) 1/3
(D) 1/4
(E) 3/4
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