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
Perfect example of transition of anterior to posterior is 
Select and explain. 
A. Mandibular canine, B. Maxillary canine, C. Mandibular 1st premolar, D. Maxillary 1st premolar
A: Mandibular canine
Answer: A: Mandibular canine 
Explanation: None