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: Dental
Surgical removal of the torus palatinus is indicated when: 
Select and explain. 
A. Torus impinges on soft palate, B. It interferes with development of proper PPS, C. Torus is an undercut that traps debris and food, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: In addition to above indications, torus should also be removed when it interferes with fabrication of adequately extended denture or when patient is too much concerned about it.