All of the following occur during the Krebs cycle EXCEPT:I. Acetyl-CoA combines with oxaloacetate to form citrate. II. FADH2 accepts two electrons to form FAD. III. NAD+ is reduced to form NADH. IV. Pyruvate is converted into acetyl-CoA. Carbon dioxide, NADH, and FADH2, and ATP are reactants. A)I and III)I, IV, and VC)II, III, and VD)I, II, IV, and V