This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oxidation of Fatty acids: Ketogenesis, Subject name: Biochemistry
[{'content': 'Which of the following is a primary ketone body? \nSelect and explain. \nA. Acetoacetate, B. Acetone, C. Beta hydroxy butyrate, D. All are primary', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANSWER: (A) AcetoacetateREF: Harper 27th ed p. 191Acetoacetate is a primary ketone bodyKetone bodies are:AcetoacetateAcetoneBeta hy droxy butyrate', 'role': 'assistant'}]