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: Medicine
[{'content': 'The drug used in the treatment of idiopathic hypercalciuria is - \nSelect and explain. \nA. Allopurinol, B. Frusemide, C. Acetazolamid, D. Thiazide', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]