82. Which of the following is correct regarding the reaction shown below? pyruvate + HCO3 − + ATP → oxaloacetate + ADP + Pi ① It requires the direct transport of oxaloacetate across the membrane. ② It utilizes the malate-aspartate shuttle in some species. ③ It is essential for gluconeogenesis. ④ Its reactants require the function of enzymes which are only found in the cytosol. (A) ①② (B) ②③ (C) ③④ (D) ①③ (E) ②④