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 medicine - \nSelect and explain. \nA. Blue bag, B. Black, C. Yellow, D. Red', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b i.e., Black o Discarded medicines are category 5 wastes which are discarded in black colour plastic bag.', 'role': 'assistant'}]