This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
[{'content': 'Ketone body formation takes place in: \nSelect and explain. \nA. Liver, B. Kidney, C. Spleen, D. Blood', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A Harper, 26th ed, p. 183 & 25th ed, p. 243, Fig (24.6)', 'role': 'assistant'}]