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: Pathology
Hypokalemia is not present in : 
Select and explain. 
A. Vomiting, B. Diarrhoea, C. Patient on diuretics, D. Chronic renal failure
D: Chronic renal failure
Answer: D: Chronic renal failure 
Explanation: None