This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal Tubular And Obstructive Disorders, Subject name: Pediatrics
[{'content': 'Which is not a feature of classic distal A? \nSelect and explain. \nA. Hyperkalemia, B. Urine pH >5.5, C. Positive urine anion gap, D. Nephrocalcinosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Classic distal A/ Type 1 A- Hyperkalemia is not seen Hyperkalemia is seen in type IV A', 'role': 'assistant'}]