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': "All are component of saint's triad Except ? \nSelect and explain. \nA. Renal Stones, B. Hiatus hernia, C. Diveiculosis coli, D. Gall stones", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans is a i.e. Renal Stones', 'role': 'assistant'}]