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 sharp cusp like eminence found on the lingual surface in the cingulum region of permanent maxillary canine is known as: \nSelect and explain. \nA. Mammeleon., B. Perikymata., C. Tubercle., D. Lobes.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]