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: A microelectrode is characterized by: 
 Options:  <1> Give answers in steady state. <2> Always need an inert electrolyte. <3> Always need a potentiostatic system. <4> Do not need a reference electrode. <5> Always need agitation.
