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: Unknown
[{'content': 'Most suitable catheter material for long-term use is \nSelect and explain. \nA. Latex, B. Silicone, C. Polyurethane, D. Rubber', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The Foleys Silicone Catheter is a sterile 100% silicone catheter for long-term use (up to 3 months).', 'role': 'assistant'}]