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
The drug used in the treatment of idiopathic hypercalciuria is - 
Select and explain. 
A. Allopurinol, B. Frusemide, C. Acetazolamid, D. Thiazide
D: Thiazide
Answer: D: Thiazide 
Explanation: None