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': 'Which of the following is a feature of papillon lefevre\nsyndrome? \nSelect and explain. \nA. destructive periodontitis, B. palmar-plantar keratosis, C. calcification of dura, D. all the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]