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
Which of the following diuretic causes maximum loss of potassium in urine: March 2010 
Select and explain. 
A. Acetazolamide, B. Spironolactone, C. Ethacrynic acid, D. Furosemide
A: Acetazolamide
Answer: A: Acetazolamide 
Explanation: Ans. A: Acetazolamide Actezolamide causes maximum loss of potassium and bicarbonate in the urine, whereas furosemide causes maximum loss of sodium and chloride in the urine