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: The akathisia produced by some drugs is directly related to receptor blockade: 
 Options:  <1> Dopaminergic. <2> Serotoninergic <3> Histaminergic <4> Adrenergic <5> Cholinergic
