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: Pathology
Polydactyly, craniosynostosis, Late closure of fontanelles is a feature of: 
Select and explain. 
A. Apert's syndrome, B. Crouton's syndrome, C. Pierre robin syndrome, D. Down' syndrome
A: Apert's syndrome
Answer: A: Apert's syndrome 
Explanation: None