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: Surgery
[{'content': 'Surgical recontouring of alveolar ridges is called as \nSelect and explain. \nA. Atveoloplasty, B. Alveolectomy, C. Mucogingivectomy, D. Fiberectomy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]