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
The sharp cusp like eminence found on the lingual surface in the cingulum region of permanent maxillary canine is known as: 
Select and explain. 
A. Mammeleon., B. Perikymata., C. Tubercle., D. Lobes.
C: Tubercle.
Answer: C: Tubercle. 
Explanation: None