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 maxillary molar crown of an early fossil primate featured a trigone made of three main cusps; these cusps were: \nSelect and explain. \nA. Distobuccal, distolingual and Mesiolingual, B. Distolingual, Mesiobuccal, and linguo buccal, C. Mesiobuccal, Distobuccal and Mesiolingual, D. Mesiolingual, Mesiobuccal and distolingual', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]