This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Corpulence index means \nSelect and explain. \nA. Measurement of copper level in the serum, B. Measurement of obesity, C. Measurement of iron loss in faeces, D. Pressure difference between various chambers of the hea', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Corpulence index = actual weight divided by the desirable weight(Ref: Park 20/e p348)', 'role': 'assistant'}]