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
Which of the following represents the embryological origin of Meckel's diveiculum? 
Select and explain. 
A. Urogenital sinus, B. Allatoic diveiculum, C. Vitello intestinal duct, D. None of the above
C: Vitello intestinal duct
Answer: C: Vitello intestinal duct 
Explanation: 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.