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: Social & Preventive Medicine
[{'content': 'Carbohydrate reserve of human adult is: \nSelect and explain. \nA. 100 g, B. 200 g, C. 500 g, D. 1100 g', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Carbohydrate reserve of human adult is 500 g. This reserve is rapidly exhausted while fasting. Ref: Park 22nd edition, page 568', 'role': 'assistant'}]