This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: A.N.S., Subject name: Pharmacology
[{'content': 'M3 Receptor antagonist used in the treatment of bladder over activity is: \nSelect and explain. \nA. Tamsulosin, B. Desmopressin, C. Doxazosin, D. Darifenacin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: d (Darifenacin) Ref:Campbells urology, 9th ed,p. 2093Darifenacin is a relatively selective M muscarinic receptor antagonist used in bladder overactivity.The other anti muscarinic agents used are:TolterodineTrospiumSolifenacinPropanthelineAtropineHyocyanine', 'role': 'assistant'}]