This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Propoional moality rate is \nSelect and explain. \nA. Number of death due to paicular a cause, B. Number of death during that year, C. Number of death in one month, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ref: Park&;s 23rd edition pg 58 note: propoional moality rate measures the burden of disease others are crude death rates.', 'role': 'assistant'}]