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': 'Used urine bags and catheters are disposed in \nSelect and explain. \nA. Red bag, B. Yellow bag, C. Blue bag, D. White container', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]