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': 'One of the following drugs can slow the loss of alveolar bone in periodontitis: \nSelect and explain. \nA. Dexamethasone, B. Ibuprofen, C. Penicillin, D. Calcium channel Mockers', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]