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: Dental
[{'content': 'One sub-centre covers: \nSelect and explain. \nA. 1000 population, B. 2000 population, C. 4000 population, D. 5000 population', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The sub-centre is the peripheral outpost of the existing health delivery system in rural areas.\xa0\nOne sub-centre covers a population of 5000 in general and 3000 in hilly, tribal and backward areas.\xa0\nThe functions of a sub-centre are limited to mother and child health care, family planning and immunization.\xa0\nThere are two functionaries at the level of the subcentre: one male and one female multipurpose health worker.\xa0\nOne health assistant (HA) will supervise the work of 6 health workers.\xa0\nSix subcentres are located in each PHC area.\n\nEssentials of preventive and community dentistry\nSoben Peter\n5th edition\nPage number 226', 'role': 'assistant'}]