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: Dental
[{'content': 'Expired and outdated drugs are managed by: \nSelect and explain. \nA. Place in secured landfill., B. Collect for 10 yrs safely and then bury them., C. Incineration., D. Autoclave', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]