This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hernia, Subject name: Surgery
Name the retractor? 
Select and explain. 
A. Deaver retractor, B. Richardson retractor, C. Malleable retractor, D. Goulet
A: Deaver retractor
Answer: A: Deaver retractor 
Explanation: Ans. (a) Deaver retractor