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
Population covered by a PHC in hilly region is – 
Select and explain. 
A. 20000, B. 30000, C. 40000, D. 25000
A: 20000
Answer: A: 20000 
Explanation: One PHC for every 30,000 rural population in the plains.
One PHC for every 20,000 population in hilly, tribal and backward areas.