This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute Renal Failure, Subject name: Medicine
Acute renal failure results in: 
Select and explain. 
A. Hyperkalemic alkalosis, B. Hypokalemic alkalosis, C. hyperkalemic acidosis, D. Hypokalemic acidosis
C: hyperkalemic acidosis
Answer: C: hyperkalemic acidosis 
Explanation: Ans.(c) Hyperkalemiac acidosisRef : Harrison 19th ed. /1808, 1810* Acute kidney injury will cause inability to excrete H+ and K+ both leading to hyperkalemic acidosis.* The acidosis seen is high anion gap metabolic acidosis.