This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bleeding from the GUT and diseases of esophagus, Subject name: Medicine
[{'content': "Not a cause of upper GIT bleeding \nSelect and explain. \nA. Meckel's diveiculum, B. Mallory Weiss Syndrome, C. Gastric antral vascular ectasia, D. Poal hypeension", 'role': 'user'}, {'content': "Answer: A \nExplanation: Meckel's diveiculum - Found in Ileum distal to ligament of Treitz( Cause of lower GI BLEED) Location of Ligament of Treitz is Duodenojejunal flexure", 'role': 'assistant'}]