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': 'Between 2 countries moality compared best by - \nSelect and explain. \nA. Age adjusted rates, B. Crude rates, C. Propoional rates, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., Age adjusted rates", 'role': 'assistant'}]