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
Osteoradionecrosis is due to 
Select and explain. 
A. Infection, B. Endarteritis of blood vessels, C. Sepsis, D. None of the above
B: Endarteritis of blood vessels
Answer: B: Endarteritis of blood vessels 
Explanation: None