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
In which of the following conditions, hyperbaric oxygen therapy is useful 
Select and explain. 
A. Osteomyelitis, B. Osteoradionecrosis, C. Gas gangrene, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None