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': 'The reverse three quarter crown with complete coverage of the facial surface is used for: \nSelect and explain. \nA. Mandibular molars with severe lingual inclination, B. Molars with destructed facial surface, but intact lingual surface, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The reverse three-quarter crown, with complete coverage of the facial surface, is used only\xa0occasionally and is usually reserved for one or two situations:\n\nIt is ideal for restoration of mandibular molars that are severely inclined lingually, and\nIt can also be used on molars that have suﬀered destruction of the facial surface, but not of the\xa0 lingual.', 'role': 'assistant'}]