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': "All are components of saint's traid except \nSelect and explain. \nA. Renal stones, B. Hiatus hernia, C. Diveiculitis of colon, D. Gall stones", 'role': 'user'}, {'content': "Answer: A \nExplanation: Saint's triad is a medical condition of concurrence of the following: Cholelithiasis (gallstones) Hiatal hernia Diveicular disease (diveiculosis of colon) Ref: Bailey and love 27th edition Pgno: 1124", 'role': 'assistant'}]