This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hospital waste, disaster management and occupational health, Subject name: Social & Preventive Medicine
[{'content': 'Safe disposal of mercury is: \nSelect and explain. \nA. Collect carefully and recycle, B. Controlled combustion, C. Treatment with chemicals, D. Deep burial', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' i.e. Collect carefully and recycle Repeat May 10Elemental mercury exhibits high toxicity via inhalation, skin absorption and ingestion.All mercury and mercury-containing items should be recycled. It should never be poured down a drain or sewer, flushed down a toilet, or thrown in the trash. As long as mercury is recycled, it will stay in the recycling loop, going into new products rather than into the environment.", 'role': 'assistant'}]