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
Closure of coronal sutures stas at age of : 
Select and explain. 
A. 20 years, B. 21 years, C. 30-35 years, D. 50-60 years
C: 30-35 years
Answer: C: 30-35 years 
Explanation: C i.e. 30-35