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': 'Objectives of pre-prosthetic surgical prescriptions include all, except \nSelect and explain. \nA. Epulis fissuratum, B. Unfavourably located frenular attachments, C. Vestibuloplasty, D. None of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]