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
Peg-shaped incisors which taper towards the indsal edge
are typically seen in all of the following conditions EXCEPT 
Select and explain. 
A. Congenital syphilis, B. Rickets, C. Anhyirotic ectodermal dysplasia, D. Supernumerary teeth
B: Rickets
Answer: B: Rickets 
Explanation: None