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
Meckel's diverticulum is a derivative of: 
Select and explain. 
A. Allantoic diverticulum, B. Vitellointestinal duct, C. Ventral mesogastrium, D. Ductus arteriosus
B: Vitellointestinal duct
Answer: B: Vitellointestinal duct 
Explanation: Ans. (b) Vitellointestinal duct* Persistence of Proximal VID: Meckel's* Persistence of Distal VID: Umbilical adenoma (Raspberry; tumor)