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: Forensic Medicine
Hardest calcified pa of tooth: JIPMER 13 
Select and explain. 
A. Enamel, B. Dentin, C. Cementum, D. Pulp
A: Enamel
Answer: A: Enamel 
Explanation: Ans. Enamel