This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'Hyperaldosteroism is - \nSelect and explain. \nA. Metabolic acidosis, B. Metabolic alkalosis, C. Respiratory acidosis, D. Respiratory alkalosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: metabolic alkalosis are caused by hydrogen ion loss into urine and migration into potassium depleted cells ( Harrison 17 2260)', 'role': 'assistant'}]