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
The most reliable criteria in Gustafson's method of identification is: 
Select and explain. 
A. Cementum apposition, B. Transparency of root, C. Attrition, D. Root resorption
B: Transparency of root
Answer: B: Transparency of root 
Explanation: B i.e. Transparency of root - Stack's method (formula) is for age estimation from weight & height of erupting teeth in infant and childrenQ. - Translucency or transparency of root is the most reliable criteria in Gustafson method of age estimationQ