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
[{'content': 'Which one of the following is false regarding primary adrenal hyperplasia? \nSelect and explain. \nA. Hyponatremia, B. Hypernatremia, C. Water retension, D. Hypokalemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Primary adrenal hyperplasia leads to increased mineralocoicoid activity and hence sodium and water retention with increased potassium excretion. Primary adrenal hyperplasia (PAH) is a clinical finding that can only be realized after surgery. Findings of PAH include severe hypokalemia and hypeension responsive to spironolactone, and elevated supine plasma aldosterone and 18-hydroxycoicosterone values that did not increase after ambulation.', 'role': 'assistant'}]