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: Dental
[{'content': 'Most severe luxation injury among the following: \nSelect and explain. \nA. Concussion, B. Lateral luxation, C. Extrusion, D. Intrusion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: order of luxation injuries on the basis of Severity:\nConcussion<subluxation<lateral luxation<extrusion<intrusion', 'role': 'assistant'}]