This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hospital waste and disaster management, Occupational health, Subject name: Social & Preventive Medicine
[{'content': 'Sources of health waste \nSelect and explain. \nA. Nursing homes, B. PHC, C. Animal houses, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hospitals, animal houses, research labs, blood banks ..etc all generate healthcare- waste and therefore, covered under Bio-medical waste rulesPark 23e pg: 789', 'role': 'assistant'}]