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
For aoic graft the best material available is - 
Select and explain. 
A. Dacron, B. Aery, C. Vein, D. None
A: Dacron
Answer: A: Dacron 
Explanation: Ans. is 'a' i.e., Dacron