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
[{'content': 'Which organ does not utilise ketone bodies: \nSelect and explain. \nA. Liver, B. Brain, C. Skeletal muscles, D. Cardiac muscles', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Liver', 'role': 'assistant'}]