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
The selective MAO-B inhibitor among the following is 
Select and explain. 
A. Selegiline, B. Clorgyline, C. Moclobemide, D. Tranylcypromine
A: Selegiline
Answer: A: Selegiline 
Explanation: 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.