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
According to national health policy, a subcentre caters to population in hilly anti tribal areas ? 
Select and explain. 
A. 3000, B. 5000, C. 1000, D. 2500
A: 3000
Answer: A: 3000 
Explanation: Ans. is 'a' i.e., 3000 Sub-centre o The sub-centre is the peripheral out post of the existing healthy delivery system in rural areas. o They are being established : - i) One sub-centre for every 5000 population in general. ii) One sub-centre for every 3000 population in hilly, tribal & backward area.