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': 'Adrenaline acts on which enzyme in glycogenolysis? \nSelect and explain. \nA. Glucokinase, B. Hexokinase, C. Phosphorylase, D. Gluc diphosphatase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Phosphorylase', 'role': 'assistant'}]