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 best bone graft which can be utilized for reconstruction is: 
Select and explain. 
A. Costo chondral graft, B. Calvarial graft, C. lilac crest graft, D. Metatarsal bone graft
C: lilac crest graft
Answer: C: lilac crest graft 
Explanation: None