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
The best skin graft for open wounds is - 
Select and explain. 
A. Isograft, B. Homograft, C. Allograft, D. Autograft
D: Autograft
Answer: D: Autograft 
Explanation: None