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': 'Gottlib has described aggressive periodontitis as diffused atrophy of alveolar bone and termed the condition as \nSelect and explain. \nA. Periodontosis, B. Cementopathia, C. Juvenile periodontitis, D. Alveolopathia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]