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
[{'content': 'Surgical removal of the torus palatinus is indicated when: \nSelect and explain. \nA. 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', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In addition to above indications, torus should also be removed when it interferes with fabrication of\xa0adequately extended denture or when patient is too much concerned about it.', 'role': 'assistant'}]