This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'The first product of "Glycogenolysis" is: \nSelect and explain. \nA. Glucose- 6-phosphate, B. Glucose 1, 6 diphosphate, C. Glucose-1-phosphate, D. Fructose-l-phosphate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Glucose-1-phosphate', 'role': 'assistant'}]