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
Delayed dentition is seen in all/except ? 
Select and explain. 
A. Down syndrome, B. Congenital hypothyroidism, C. Rickets, D. All of above
D: All of above
Answer: D: All of above 
Explanation: Ans. is 'd' i.e., All of above