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': 'Following age pyramid denotes \nSelect and explain. \nA. Developing country, B. Developed country, C. Underdeveloped country, D. Poor country', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The pyramid of developing country (e.g. India) has a broad base and a tapering top.\nIn developed countries, the pyramid generally shows a bulge in the middle and has a narrower base (as in figure given in the question).', 'role': 'assistant'}]