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
Ossification center of upper end of ulna is united by: DNB 10 
Select and explain. 
A. 9 years, B. 11 years, C. 14 years, D. 16 years
D: 16 years
Answer: D: 16 years 
Explanation: Ans. 16 years