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 starting material for ketogenesis is: 
Select and explain. 
A. Propionyl-CoA, B. Acetyl  CoA, C. Acetoacetyl-CoA, D. Acyl CoA
C: Acetoacetyl-CoA
Answer: C: Acetoacetyl-CoA 
Explanation: Acetoacetyl-CoA, which is the starting material for ketogenesis, also arises directly from the terminal  four carbons of a fatty acid during β-oxidation.
HARPERS ILLUSTRATED BIOCHEMISTRY30th ed page no 227