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 small ridges, perikymata, seen on facial surfaces of canines are the result of 
Select and explain. 
A. Hyperplasia, B. Hypocalcification, C. Normal development, D. Interstitial development
C: Normal development
Answer: C: Normal development 
Explanation: None