This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'The selective MAO-B inhibitor among the following is \nSelect and explain. \nA. Selegiline, B. Clorgyline, C. Moclobemide, D. Tranylcypromine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: MAO is mono amine oxidase exists in two isoforms MAO A and MAO B. MAO A inhibitors are used in treatment of depression where as MAO B in treatment of parkinsons MAO B inhibitors include selegeline and rasagiline. Ref: KD Tripathi 8th ed.', 'role': 'assistant'}]