Name the rate-limiting enzymes for glycogenesis, glycogenolysis, PPP a. Hexokinase; Glucose-6-phosphatase; Glucose-6-phosphate dehydrogenase b. Phosphofructokinase-1; Glycogen phosphorylase; Glucose-6-phosphate dehydrogenase c. Glycogen synthase; Glycogen phosphorylase; Glucose-6-phosphate dehydrogenase d. Hexokinase; Glycogen phosphorylase; Ribose-5-phosphate isomerase