This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
Cytotoxic and expired drug disposal is done by which method? 
Select and explain. 
A. Dumping, B. Autoclave, C. Landfill, D. Burning
C: Landfill
Answer: C: Landfill 
Explanation: None