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
All are true about enamel rods except 
Select and explain. 
A. Length of enamel rods is same as the thickness of enamel, B. Enamel rods are narrow at DEJ and wide at tooth surface., C. Under light microscope seen as Fish scale, D. Tail is more resistant to caries than the core
A: Length of enamel rods is same as the thickness of enamel
Answer: A: Length of enamel rods is same as the thickness of enamel 
Explanation: Enamel rods have wavy path, hence length of enamel rod is more than the thickness of the enamel.