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
Xiphoid process fuses with sternum after: DNB 09 
Select and explain. 
A. 60 years, B. 40 years, C. 30 years, D. 20 years
B: 40 years
Answer: B: 40 years 
Explanation: Ans. 40 years