This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health care of community & international health, Subject name: Social & Preventive Medicine
[{'content': 'An ideal subcenter for a rural population should cater a population of - \nSelect and explain. \nA. 1000, B. 2000, C. 5000, D. 6000', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The sub-center is the peripheral outpost of the existing health delivery system in rural areas.They are being established on the basis of one sub-center for every 5000 population in general and one for every 3000 population in hilly and tribal areas (refer pgno:903 park 23rd edition)', 'role': 'assistant'}]