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: Pathology
[{'content': 'The type of embolism seen in fractures of long bones: \nSelect and explain. \nA. Thrombo embolism, B. Air embolism, C. Fat embolism, D. Amniotic fluid embolism', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]