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
Fluoride ion acts as inhibitor of: 
Select and explain. 
A. Enolase, B. Hexokinase, C. Cyt oxidase, D. Carbonic anhydrase
A: Enolase
Answer: A: Enolase 
Explanation: None