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': 'If a complete denture patient has genial tubercle at the Level of the crest of mandibular ridge, the denture base: \nSelect and explain. \nA. Can cover them, B. Should not cover them, C. Should cover them but relief is not necessary, D. Should cover them and relief is must', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]