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': 'Tooth with periapical pathology with rarefaction radiologically is diagnosed as \nSelect and explain. \nA. Condensing osteitis, B. Acute periapical periodontitis, C. Acute periapical abscess, D. Periapical granuloma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]