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': 'During starvation, muscle uses ? \nSelect and explain. \nA. Fatty acids, B. Ketone bodies, C. Glucose, D. Proteins', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Fatty acids", 'role': 'assistant'}]