This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
Failure of migration of neural crest cells is seen in: 
Select and explain. 
A. Albinism, B. Congenital megacolon, C. Odontomes, D. Adrenal tumour
B: Congenital megacolon
Answer: B: Congenital megacolon 
Explanation: Ans: b (Congenital megacolon)Ref: Bailey & Love, 24th ed, p.l 153 & 23rd ed, p. 1027