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 enamel of the posterior teeth is thickest at 
Select and explain. 
A. Cervical third of buccal surface, B. Middle third of buccal surface, C. Middle third of lingual surface, D. Occlusal surface
D: Occlusal surface
Answer: D: Occlusal surface 
Explanation: None