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: Of the following reaction mechanisms, in which there is an inversion of the configuration from the reactant to the product of the reaction ?:
Options: <1> Bimolecular nucleophilic substitution (SN2). <2> Unimolecular elimination (E1). <3> Unimolecular nucleophilic substitution (SN1). <4> Addition Markovnikov. <5> Addition anti-Markovnikov.
Example Output: 1

Example Input: Question: In a patient with Renal Insufficiency, oral drugs must be administered:
Options: <1> With natural fruit juices. <2> With the lowest volume of liquid possible. <3> With the same volume as any other patient. <4> With the largest volume of liquid possible. <5> Always during hemodialysis.
Example Output:
2