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 is true of alveolar bone \nSelect and explain. \nA. Most stable of the periodontal tissues, B. It is in a constant state of flux, C. It is not regulated by systemic and local influences, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]