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
Risk of failure of cold chain maintainance is more at 
Select and explain. 
A. District hospitals, B. PHCs, C. Subcentre level, D. CHCs
C: Subcentre level
Answer: C: Subcentre level 
Explanation: None