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: Surgery
Which of the following catheter materials is most suited for long-term use is? 
Select and explain. 
A. Latex, B. Silicone, C. Rubber, D. Polyurethane
B: Silicone
Answer: B: Silicone 
Explanation: Silicone can remain in situ for 12 weeks. Ref: Campbell's Urology 8th Edition, Page 112