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: Pediatrics
A 3 year old child presents with four days history of puffiness of face, fever and tea coloured urine. During the course of his disease, he can have any of the complications except- 
Select and explain. 
A. Hypokalemia, B. Hypeensive encephalopathy, C. Acute renal failure, D. Acidosis
A: Hypokalemia
Answer: A: Hypokalemia 
Explanation: Ans. is 'a' i.e., Hypokalemia It is a case of acute nephritic syndrome which can result in ARF. In ARF there is hyperkalemia (not hypokalemia) and acidosis. Acute nephritic syndrome is also characterized by hypeension, So hypeensive encephalopathy may also occur.