This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
[{'content': 'patient recieved 12 hours after fracture of tibia is having pO2 as 60% On re breathing unit maintaining the saturation of loo% but remains confused Chest is clear What is most likely diagnosis \nSelect and explain. \nA. Pulmonary confusion, B. Fat embolism syndrome, C. Pulmonary Embolism, D. ARDS', 'role': 'user'}, {'content': 'Answer: B \nExplanation: REF : MAHESWARI 7TH ED', 'role': 'assistant'}]