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: Social & Preventive Medicine
[{'content': 'Discarded cytotoxic medicines should he disposed in? \nSelect and explain. \nA. Blue bag, B. Black bag, C. Red bag, D. Yellow bag', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Black bag", 'role': 'assistant'}]