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
Objectives of pre-prosthetic surgical prescriptions include all, except 
Select and explain. 
A. Epulis fissuratum, B. Unfavourably located frenular attachments, C. Vestibuloplasty, D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: None