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
Statin action on HMG CoA reductase is 
Select and explain. 
A. Competitive inhibitor, B. Irreversible inhibitor, C. Non competitive inhibitor, D. Inhibition result in decrease LDL receptors on hepatocytes
A: Competitive inhibitor
Answer: A: Competitive inhibitor 
Explanation: None