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': '50 people are suffering from cholera in a population of 5000. Out of 50, suffering from cholera, 10 died. But the total deaths are 50. What is the death rate? \nSelect and explain. \nA. 1 per 1000, B. 5 per 1000, C. 20 per 100, D. 10 per 1000', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]