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
The success of a free gingival graft procedure depends upon which of the following 
Select and explain. 
A. The graft being immobilized at the recipient site, B. The donor tissue being as thick as possible and containing periosteum, C. A thick blood clot remaining between the recipient and donor tissue, D. Periosteal fenestration being present
A: The graft being immobilized at the recipient site
Answer: A: The graft being immobilized at the recipient site 
Explanation: None