Which Reaction in the Citric Acid Cycle Will NOT Proceed $\alpha$

Multiple Choice

Which reaction in the citric acid cycle will NOT proceed in the absence of inorganic phosphate ions?

A) the reaction catalyzed by $\alpha$ -ketoglutarate dehydrogenase
B) the reaction catalyzed by succinate dehydrogenase
C) the reaction catalyzed by succinyl-CoA synthetase
D) the reaction catalyzed by aconitase
E) the reaction catalyzed by fumarase