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
Number of beds in a CHC is: March 2010 
Select and explain. 
A. 20, B. 30, C. 40, D. 50
B: 30
Answer: B: 30 
Explanation: Ans. B: 30