This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
In cranial synostosis scaphyocephaly there is premature closure of which suture? 
Select and explain. 
A. Sagittal suture, B. Coronal suture, C. Larndid suture, D. All above
A: Sagittal suture
Answer: A: Sagittal suture 
Explanation: Sagittal craniosynostosis, or scaphocephaly, occurs when ceain bones in a child's skull fuse prematurely. At bih, a child's skull is made up of several separate bones with growth plates (also called 'sutures') between them. Because the skull is not a solid piece of bone yet, the brain can grow and expand in size Reference Harrison20th edition pg 2776