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': 'At the time of starvation body utilizes \nSelect and explain. \nA. Ketone bodies, B. Fatty acids, C. Glucose, D. Amino acids', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]