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
Which of the following features of a permanent maxillary lateral incisor aids in distinguishing it from a mandibular lateral incisor? 
Select and explain. 
A. Flattened root, B. More pronounced lingual fossa, C. Thinner incisal ridge, D. Sharper proximal incisal angles
B: More pronounced lingual fossa
Answer: B: More pronounced lingual fossa 
Explanation: None