This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Human identification, Subject name: Forensic Medicine
The maximum age of this person is:- 
Select and explain. 
A. Less than 12 years, B. 5 years, C. 6 years, D. 18 years
A: Less than 12 years
Answer: A: Less than 12 years 
Explanation: Among 8 carpal bones, Pisiform has not appeared.( it appears at 10- 12years of age ) Trapezium & trapezoid appeared: 6 years Reason: Wrist joint: Center for lower end of radius and ulna appeared, pisiform bone has not appeared; other carpal bones have appeared. Age is more than 6 years and less than 12 years. Minimum age of the person is 6 years; maximum age of the person is 12 years