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 of 5000 population, 50 persons suffered from cholera and 10 persons died. What will be the case fatality ratio? \nSelect and explain. \nA. 0.20%, B. 1.00%, C. 5.00%, D. 20.00%', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .case fatality ratio is calculated as the total number of deaths due to a paicular disease divided by total number of cases due to the same disease ,whol;e multiplied by 100 that is 10/50 *100 equals 20% .', 'role': 'assistant'}]