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: Pediatrics
Anterior fontanelle ossifies by: March 2013 (b, f) 
Select and explain. 
A. 6 months, B. 12 months, C. 18 months, D. 24 months
C: 18 months
Answer: C: 18 months 
Explanation: Ans. C i.e. 18 months Its pathological if anterior fontanelle fails to ossify by 24 months