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': 'Fluoride, used in the collection of blood samples for glucose estimation, inhibits the enzyme: \nSelect and explain. \nA. Glucokinase, B. Hexokinase, C. Enolase, D. Glucose-6-phosphatase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Enolase', 'role': 'assistant'}]