23. What is the role of acetyl-CoA in glycolysis? (A) It is the final product of glycolysis, directly yielding ATP. (B) It directly participates in the phosphorylation of glucose to glucose-6-phosphate. (C) It is a crucial intermediate formed during the conversion of glucose to pyruvate. (D) It directly reduces NAD+ to NADH through the glycolytic pathway. (E) It is not directly involved in glycolysis itself but links glycolysis to the citric acid cycle.