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': "A young hypeensive patient has serum K+ 2.8 meq/L and Taldosterone level with Si-ed plasma rennin activity. The likely cause is: \nSelect and explain. \nA. Renal aery stenosis, B. Ectopic ACTH syndrome, C. Diuretic therapy, D. Conn's syndrome", 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is D (Conn's syndrome): Increased Aldosterone levels (Hjperaldosteronism) in the presence of hypeension hypokalemia and decreased rennin activity suggests a diagnosis of Conn's syndrome.", 'role': 'assistant'}]