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: Pharmacology
[{'content': 'Potassium sparing diuretics acts on : \nSelect and explain. \nA. Na+ K+ pump, B. Aldosterone receptor, C. Carbonic anhydrase, D. Na+ Cl– symporter', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]