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: Pediatrics
[{'content': 'Which of the following statements about 21 alpha hydroxylase deficiency is false? \nSelect and explain. \nA. Most common cause of Congenital Adrenal Hyperplasia (CAH) in children, B. Affected females present with ambiguous genitalia, C. Affected males present with precocious pubey, D. Hypokalemic alkalosis is seen', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hyperkalemia is seen in this case.Deficiency of 21 hydroxylase results in manifestations of aldosterone deficiency (salt wasting), loss of sodium (hyponatremia), increase in potassium (hyperkalemia). Ref: OP Ghai 6th Edition, Page 490;Harrison 17th Edition, Page 2267; Nelson 18th Edition, Page 2360- 2365', 'role': 'assistant'}]