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
A man presented with fractures of 4th to 10th ribs and respiratory distress after a Road Traffic Accident (RTA). He is diagnosed to have flail chest and a PaO2 of <60%. Management is - 
Select and explain. 
A. Tracheostomy, B. IPPV with oral intubation, C. Fixation of ribs, D. Strapping of chest
B: IPPV with oral intubation
Answer: B: IPPV with oral intubation 
Explanation: None