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
All of the following conditions are associated with hypokalemia, except 
Select and explain. 
A. Adrenal tumor, B. Thiazide, C. Diarrhoea, D. ARF
D: ARF
Answer: D: ARF 
Explanation: Metabolic disturbances associated with acute renal failure are hyperkalemia, hyperphosphatemia and hypocalcemia. Adrenal tumor, thiazide and diarrhoea are associated with hypokalemia. Reference: Harrison's principles of Internal Medicine 18th edition chapter 279.