This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthetic equipments, Subject name: Anaesthesia
Hyperbaric Oxygen is not useful in 
Select and explain. 
A. CO poisining, B. Veigo, C. Gas gangrene, D. compament syndrome
B: Veigo
Answer: B: Veigo 
Explanation: Hyperbaric oxygen is not useful in veigo.