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: Pharmacology
[{'content': 'Which of the following statement is not true about diuretics \nSelect and explain. \nA. Acetazolamide is a carbonic acid anhydrase stimulant, B. Thiazides act on coical diluting segment of nephron, C. Furosemide is a high ceiling diuretics, D. Spironolactone is an Aldosterone antagonist', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Acetazolamide is an inhibitor of the enzyme carbonic anhydrase.', 'role': 'assistant'}]