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
[{'content': 'True about boundaries of lesser Sac: \nSelect and explain. \nA. Posteriorly stomach, B. Crus of diaphragm anterior, C. Spleen anteriorly, D. Greater omentum', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D. i.e. Greater omentum', 'role': 'assistant'}]