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
Chronic renal failure is associated with 
Select and explain. 
A. Metabolic acidosis, B. Respiratory acidosis, C. Respiratory alkalosis, D. Hypoxia
A: Metabolic acidosis
Answer: A: Metabolic acidosis 
Explanation: None