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: Forensic Medicine
Fluoride, used in the collection of blood samples, inhibits the enzyme: WB 07; PGI 08; FMGE 10, 11 
Select and explain. 
A. Glucokinase, B. Hexokinase, C. Enolase, D. Glucose-6-phosphatase
C: Enolase
Answer: C: Enolase 
Explanation: Ans. Enolase