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: Pharmacology
[{'content': 'Which drug is specific MAO - B inhibitor? \nSelect and explain. \nA. Seleginile, B. Phenelzine, C. Tranylcypromine, D. Haloperidol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is. a'i.e., SelegilineNonselective = Tranylcypromine,phenelzine, isocarboxazid.Selective MAO-A = Moclobemide, clorgyline (used in depression).Selective MAO-B = Selegiline (used in parkinsonism).", 'role': 'assistant'}]