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
All can take split thickness graft except ? 
Select and explain. 
A. Fat, B. Muscle, C. Skull bone, D. Deep fascia
C: Skull bone
Answer: C: Skull bone 
Explanation: Ans is 'c' ie Skull "The skin graft must be applied to a well-vascularized recipient wound bed. It will not adhere to exposed bone, cailage, or tendon devoid of periosteum, perichendrium or peritenon, respectively, or devoid of its vascularized perimembranous envelope." - Sabiston I7/e p 2185