This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Subject name: Pediatrics
Delayed dentition is seen in: 
Select and explain. 
A. Down syndrome, B. Congenital hypothyroidism, C. Rickets, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Causes of delayed dentition: Familial Rickets* Idiopathic; Incontinentiapigmenti* Endocrine causes* : Hypothyroidism, hypoparathyroidism, hypopituitarism Down syndrome* Cleidocranial dysplasia Progeria Advanced dentition- Seen in: o Precocious pubey* o Hypehyroidism*