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': 'In a village with population of 5000, 50 people have a disease and 10 of them died. What is case fatality rate? \nSelect and explain. \nA. 1%, B. 2%, C. 0.50%, D. 20%', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .case fatality rate is the total number of deaths due to a paicular disease divided by total number of cases due to the same disease ,total multiplied by 100.it represents the killing power of a disease.it is simply the ratio of deaths to cases.the time interval is not specified. here it is 10 by 50 multiplied by 100 equals 20 ref:park&;s textbook of preventive and social medicine,22nd edition,pg no 55', 'role': 'assistant'}]