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': 'Corpulence index means: \nSelect and explain. \nA. Measurement of obesity, B. Measurement of copper level in serum., C. Measurement of iron losses in faeces, D. Pressure difference between the chambers of hea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Measurement of obesity', 'role': 'assistant'}]