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: Pharmacology
In diabetes insipidus, diuretic showing paradoxical antiduretic activity - 
Select and explain. 
A. Thiazide, B. Triamterene, C. Spironolactone, D. Furosemide
A: Thiazide
Answer: A: Thiazide 
Explanation: Ans. is 'a' i.e., Thiazide Thiazide diuretics paradoxically decrease urine output in DI due to formation of cAMP in distal tubules effective in both central and nephrogenic DI.