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: Anatomy
[{'content': "Which of the following represents the embryological origin of Meckel's diveiculum? \nSelect and explain. \nA. Urogenital sinus, B. Allatoic diveiculum, C. Vitello intestinal duct, D. None of the above", 'role': 'user'}, {'content': "Answer: C \nExplanation: Meckel's diveiculum results from failure or incomplete obliteration of Vitello intestinal duct( omphalomesentric duct). It follows the rule of '2' : 2% prevalence, 2:1 female predominance, located 2 feet proximal to the ileocecal valve in adults, 50% of symptomatic individuals are less than 2 years. Reference: Schwatz's Principles of Surgery 9e chapter 28.", 'role': 'assistant'}]