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': 'Standardised moality rate is stadardised for \nSelect and explain. \nA. Age, B. Disease, C. Region, D. A paicular time period', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Age", 'role': 'assistant'}]