This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of lipid, Subject name: Biochemistry
[{'content': 'Ketone body formation without glycosuria seen in \nSelect and explain. \nA. DM, B. DI, C. Prolonged starvation, D. Obesity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Repeated question', 'role': 'assistant'}]