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
Father of distraction osteogenesis is: 
Select and explain. 
A. Codivilla., B. Snyder, C. Ilizarov., D. Alexander.
C: Ilizarov.
Answer: C: Ilizarov. 
Explanation: None