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
Which one of the following is false regarding primary adrenal hyperplasia? 
Select and explain. 
A. Hyponatremia, B. Hypernatremia, C. Water retension, D. Hypokalemia
A: Hyponatremia
Answer: A: Hyponatremia 
Explanation: 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.