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: Forensic Medicine
[{'content': 'Brain in starvation uses: TN 11; UP 12 \nSelect and explain. \nA. Amino acids, B. Cellulose, C. Ketone bodies, D. Glycerol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Ketone bodies', 'role': 'assistant'}]