This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of lipid, Subject name: Biochemistry
Rate limiting enzyme in cholesterol synthesis 
Select and explain. 
A. HMG CoA synthetase, B. HMG CoA lyase, C. HMG CoA reductase, D. Mevalonate synthetase
C: HMG CoA reductase
Answer: C: HMG CoA reductase 
Explanation: Repeated question