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': 'For the disposal of hospital refuse, the bag made with cadmium is not used because incineration of the bag causes poisonous toxic fumes evolution. The colour of the bag is - \nSelect and explain. \nA. Black, B. Red, C. Blue, D. Yellow', 'role': 'user'}, {'content': "Answer: B \nExplanation: Waste collection bags for waste type needing incineration shall not be made of chlorinated plastics. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21ST EDITION. PAGE NO - 735", 'role': 'assistant'}]