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: Unknown
The hardest and most highly mineralized substance of tooth is called as 
Select and explain. 
A. Dentine, B. Enamel, C. Cementum, D. Pulp
B: Enamel
Answer: B: Enamel 
Explanation: None