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
Of the following permanent teeth, which is least likely to have two roots? 
Select and explain. 
A. Maxillary canine, B. Mandibular canine, C. Maxillary first premolar, D. Mandibular first premolar
A: Maxillary canine
Answer: A: Maxillary canine 
Explanation: None