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
"3-0" means in hospital waste management is ? 
Select and explain. 
A. Disinfection, Disposal, Drainage, B. Discard, Disinfection, Drainage, C. Destruction, Deep burial, Drainage, D. Destruction. Deep burial, Disposal
A: Disinfection, Disposal, Drainage
Answer: A: Disinfection, Disposal, Drainage 
Explanation: Ans. is 'a' i.e., Disinfection, Disposal, Drainage