This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small Intestine - Congenital Abnormalities, Subject name: Surgery
[{'content': "Remenant vitello intestinal duct causes - \nSelect and explain. \nA. Patenturachus, B. Meckel's diverticulum, C. Umbilical granuloma, D. Omphalocele", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Meckel's diverticulum", 'role': 'assistant'}]