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'.

Example Input: Question: Voltammetry of anodic redissolution: 
 Options:  <1> It is always carried out with mercury film electrodes. <2> It uses an oxidation process with chemical agents. <3> It is based on the formation of mercury salts in the electrode. <4> It does not need background electrolyte. <5> It has an electrodeposition stage.
Example Output: 5

Example Input: Question: The most appropriate microscopy to identify Treponema pallidum in exudates from syphilitic lesions is: 
 Options:  <1> Clear field without staining. <2> Clear field with simple staining. <3> Dark field <4> Phase contrast. <5> Polarized light
Example Output: 3

Example Input: Question: Miltefosine and meglumine antimonate are used against: 
 Options:  <1> Plasmodium falciparum. <2> Entamoeba histolytica. <3> Fasciola hepatica. <4> Leishmania <5> Trichinella spiralis.
Example Output:
4