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': 'An Anganwadi worker works for population of \nSelect and explain. \nA. 300-800 in plain areas, B. 400-800 in plain areas, C. 200-600 in hilly areas, D. 400-1000 in plain areas', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Health personnel\xa0\n\n\nNorm suggested\n\n\n\n\nDoctor\xa0\n\n\n1 per 1000\n\n\n\n\nNurse\n\n\n3 per 1 doctor\xa0\n\n\n\n\nASHA\n\n\n2 per 1000\n\n\n\n\nHealth workers male and female\xa0\n\n\nPlain area - 1 per 5000\n\t\t\tWilly area - 1 per 3000\n\n\n\n\nAnganwadi worker\n\n\nPlain area - 1 per 400-800\n\t\t\tHilly area - 1 per 300-800', 'role': 'assistant'}]