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'.

Ex Input:
Question: Steric stabilization in dispersed systems is:
Options: <1> More effective in aqueous dispersions. <2> More effective with volume fractions of small particles. <3> Effective in aqueous and non-aqueous dispersions. <4> Coagulates by adding electrolytes. <5> Susceptible to reversible coagulation.

Ex Output:
3

Ex Input:
Question: What is the mechanism of action of the immunosuppressant drug everolimus ?:
Options: <1> Inhibition of the activation of lymphocytes as membrane receptors. <2> Inhibition of the transmission of the activation signals. <3> Inhibition of nucleotide synthesis. <4> Inhibition of lymphocyte migration. <5> Inhibition of proliferation signals.

Ex Output:
5

Ex Input:
Question: When an experimental design is carried out, it is fundamentally sought:
Options: <1> Know better the average of the results obtained and repeated in an experiment. <2> Know better the median of the results obtained in an experiment. <3> Identify better the factors that can affect the experiment. <4> To better identify the regression equations in an experiment. <5> To know better the standard deviation of the different data in the experiment.

Ex Output:
3