This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney Stones & Renal Tubular Acidosis, Subject name: Medicine
[{'content': 'Which is the most common cause of calcium oxalate stones? \nSelect and explain. \nA. Hyperparathyroidism, B. Idiopathic Hypercalciuria, C. Dietary intake of milk-based products, D. Renal tubular acidosis type 1', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Most common cause of calcium oxalate stones- Idiopathic Hypercalciuria Other causes are- Hyperuricosuria Primary hyperparathyroidism Distal renal tubular acidosis Dietary hyperoxaluria', 'role': 'assistant'}]