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
HMG Co A production in liver is inhibited by 
Select and explain. 
A. Insulin, B. Thyroxine, C. Glucagon, D. Cortisol
A: Insulin
Answer: A: Insulin 
Explanation: Insulin