Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: (-) - Deprenyl (or selegiline) is a propargylamine that is used in the treatment of Parkinson's disease because it is: 
 Options:  <1> Dopamine D2 receptor agonist. <2> Dopamine antagonist. <3> COMT inhibitor. <4> Dopamine prodrug. <5> Suicide inhibitor of the MAO-B.
