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: Surgery
[{'content': 'Blood supply to greater omentum is provided by: \nSelect and explain. \nA. Gastric aery, B. Gastroepiploic aery, C. Splenic aery, D. All of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: The blood supply to the greater omentum is derived from the right and left gastroepiploic aeries. The venous drainage parallels the aerial supply to a great extent, with the left and right gastroepiploic veins ultimately draining into the poal system. Ref: Schwaz's principle of surgery 9th edition, chapter 35.", 'role': 'assistant'}]