This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Adrenergic System, Subject name: Pharmacology
[{'content': 'Alpha la adrenergic blocker giving symptomatic relief in BPH? \nSelect and explain. \nA. Tamsulosin, B. Prazosin, C. Oxazocin, D. Dolazoline', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANSWER: (A) TamsulosinREF: KDT 7th ed p. 135, Goodman Gillman s 11th ed p. 173Tamsulosin:This unselective alpha! ./alpha blocker has been found to be as effective as terazocin for symptomatic control of BPHPrazosin: blocks all subtypes of alpha receptors equally, used for symptomatic control of BPH Terazosin: long acting, more popular for BPH due to single daily dose', 'role': 'assistant'}]