46. A mutase catalyzes which of the reactions, and belongs to which class of enzymes? (A) 2-phosphoglycerate

phosphoenolpyruvate + H₂O; lyase (B) pyruvate + NADH + H⁺

lactate + NAD⁺; oxidoreductase (C) 3-phosphoglycerate

2-phosphoglycerate; isomerase (D) dihydroxyacetone phosphate

glyceraldehyde-3-phosphate; isomerase (E) glucose-6-phosphate

fructose-6-phosphate; isomerase