This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
[{'content': 'Major complication of cysto gastrostomy for pseudopancreatic cyst \nSelect and explain. \nA. Infection, B. Obstruction, C. Fistula, D. Hemorrhage', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Serious post op hemorrhage from cyst occurs from cysto gastrostomy Ref: CSDT 11th edition Pgno :638', 'role': 'assistant'}]