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
Knife used for harvesting split thickness skin grafts is 
Select and explain. 
A. Husson's knife, B. Bard parker's knife, C. Humby's knife, D. Foley's knife
C: Humby's knife
Answer: C: Humby's knife 
Explanation: None