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: Pathology
Progression of dental caries on pit and fissure occurs from 
Select and explain. 
A. Apex of the pit and fissure, B. Wide end of the pit and fissure, C. Lateral surface of the pit and fissure, D. Bottom of the pit and fissure
C: Lateral surface of the pit and fissure
Answer: C: Lateral surface of the pit and fissure 
Explanation: None