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
[{'content': 'Clinical feature of fat embolism includes all except: \nSelect and explain. \nA. Tachypnoea and Systemic hypoxia may occur both, B. Fat globules in urine are diagnostic and Manifests after several days of trauma both, C. Petechiae in the anterior chest wall, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A, B, C i.e. Tachypnoea; Systemic hypoxia may occur; Fat globules in urine are diagnostic; Manifests after several days of trauma; Petechiae in the anterior chest wall', 'role': 'assistant'}]