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: Dental
In a free gingival graft, what happens to epithelium of the graft? It: 
Select and explain. 
A. Remains as such, B. Proliferates, C. Degenerates, D. Has to be removed by the surgeon
C: Degenerates
Answer: C: Degenerates 
Explanation: None