This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'A 50-year-old manhas a history of frequent episodes of renal colic with high calcium renal stones. The most useful diuretic in the treatment of recuurent calcium stones is: \nSelect and explain. \nA. Furosemide, B. Spironolactone, C. Hydrochlohiazide, D. Acetazolamide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (Ref: KDT 6/e p556) thiazides cause hypercalcemia by decreasing the renal excretion of Ca2+. These are useful in a patient having hypercalciurea. In such a patient, thiazides decrease the excretion of Ca2+ in the kidney and thus reduces the chances of stone formation.', 'role': 'assistant'}]