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': 'To allow space for the dentures, most tuberosity reduction require \nSelect and explain. \nA. Only soft fibrous tissue removal, B. Large part of bone to be removed, C. No reduction, since Large tuberosities are more retentive, D. Removal of bone always', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]