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: The change of internal energy when a mole of solid is formed from gaseous ions at infinite separation, at atmospheric pressure and at 0 K is called energy: 
 Options:  <1> Deformation. <2> Of sublimation. <3> Reticular <4> Of condensation. <5> Of liquefaction.
Example Output: 3

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 set of means and systems that facilitate the contact of the infectious agent with the recipient subject corresponds to: 
 Options:  <1> Source of infection. <2> Habitat. <3> Transmission mechanism. <4> Biotope <5> Reservoir.
Example Output:
3