29. Pyruvate kinase is allosterically regulated by several effectors. Which of following statements is true? (A) Phenylalanine does not change the conformation of pyruvate kinase (B)AMP decreases the catalytic efficiency of pyruvate kinase (C) ATP increases the catalytic efficiency (D) Fructose 1,6-bisphosphate decreases the Km of pyruvate kinase (E) Acetyl-coA increases the kcat of pyruvate kinase