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
The immediate precursor in the formation of acetoacetate from acetyl CoA in the liver is 
Select and explain. 
A. Mevalonate, B. HMG CoA, C. Acetoacetyl CoA, D. 3-Hydroxybutyryl
B: HMG CoA
Answer: B: HMG CoA 
Explanation: HMG CoA 


Acetoacetyl-CoA is the starting material for ketogenesis.



However, it is HMG-CoA from which acetoacetate arises.