Biotin Is Important in Gluconeogenesis for All of These Reasons

Biotin is important in gluconeogenesis for all of these reasons, except:

A) It is necessary to add CO₂ to certain intermediates in this pathway.
B) CO₂ becomes one or more of the 6 carbons in the glucose product.
C) Biotin is capable of binding covalently to CO₂.
D) Biotin helps synthesize an important precursor of phosphoenolpyruvate.
E) All of these reactions require the vitamin coenzyme.