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
CHC acts as a referral center for 
Select and explain. 
A. 2 PHCs, B. 4 PHCs, C. 6 PHCs, D. 8 PHCs
B: 4 PHCs
Answer: B: 4 PHCs 
Explanation: Community Health Centre (CHC)

Secondary level of health care.
Located for population of 1,20,000 in plains.
Located for population of 80,000 in hilly areas.
Staff at CHC : 46-52
Acts as referral unit for 4 PHCS.
Bed strength : 30