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: Linear scanning polarography uses a working electrode of: 
 Options:  <1> Drops of mercury <2> Iodine drops <3> Platinum. <4> Calomelanos <5> Drops of cerium nitrate.
