53. Which of the following statements about glycogen metabolism is NOT correct? (A) Glycogen synthesis requires glycogen synthase, UDP-glucose, and the a-1,4 → α1,6 branching enzyme. (B) Complete degradation of glycogen requires glycogen phosphorylase, transferase, and a-1,6 glucosidase. (C) Glycogen breakdown directly produces glucose-6-phosphate (G-6-P). (D) Abnormal glycogen metabolism can result in glycogen storage diseases (GSDs). (E) The nonreducing ends of the glycogen molecule form the surface of the glycogen granule, where degradation takes place.