<prompt> The selective MAO-B inhibitor among the following isSelegilineClorgylineMoclobemideTranylcypromine  <response>: 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. 