This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
By which of the following anticoagulants used in estimating blood glucose, glycolysis is prevented 
Select and explain. 
A. EDTA, B. Heparin, C. Sodium fluoride, D. Sodium citrate
C: Sodium fluoride
Answer: C: Sodium fluoride 
Explanation: Sodium fluoride is used as preservative for blood glucose by inhibiting the enzyme systems involved in glycolysis.Ref: DM Vasudevan, 7th edition, page no: 442