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': 'A 35-year-old female presents with recurrent renal stone. What is not advised? \nSelect and explain. \nA. Increase water intake, B. Restrict protein, C. Restrict salt, D. Restrict calcium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Low-calcium diets increase the risk of the incident stone formation. Low-calcium diets lead to the stone formation by reducing the amount of calcium to bind oxalate in the intestine- | urine oxalate levels.', 'role': 'assistant'}]