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
Not used as graft material in peripheral vascular disease - 
Select and explain. 
A. Dacron graft, B. Vein, C. PTFE, D. PVC
D: PVC
Answer: D: PVC 
Explanation: Ans. is 'd' i.e., PVC