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 maxillary teeth which have single antagonist are: 
Select and explain. 
A. Lateral incisors, B. Permanent canines, C. Permanent central incisors, D. Third molars
D: Third molars
Answer: D: Third molars 
Explanation: None