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
If severe bony undercut exist, best treatment 
Select and explain. 
A. Remove both undercut so that no undercut exists, B. Remove undercut on one side, C. Nothing but do only alveolar ridge contouring, D. None of the above
A: Remove both undercut so that no undercut exists
Answer: A: Remove both undercut so that no undercut exists 
Explanation: None