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
Gustafson's method used for age estimation of the tooth includes all except - 
Select and explain. 
A. Primary dentition, B. Root resorption, C. Root transparency, D. Attrition
A: Primary dentition
Answer: A: Primary dentition 
Explanation: Gustafson's method includes :

(i) Attrition, 
(ii) Paradentosis,
(iii) Secondary dentin formation,
(iv) Cementum apposition,
(v) Root resorption and
(iv) Transparency of the root.