When Is the Consumption of Acetyl-CoA by the Citric Acid

When is the consumption of acetyl-CoA by the citric acid cycle is decreased?

A) when the concentration of NAD⁺ is high
B) when the concentration of oxaloacetate is high
C) when NADH is rapidly reoxidized via the electron transport chain
D) when the mitochondrial ATP synthase is inactive
E) when the concentrations of NAD⁺ and oxaloacetate are both high