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 Q]: Question: In the pharmacological treatment of hallucinations and delusions, what is the correct answer? 
 Options:  <1> Between 30-50% of people with psychosis treated with antipsychotics continue to experience difficulties derived from clinical symptoms. <2> Antipsychotics act on the positive symptoms of psychosis, but mainly eliminate the negative symptoms. <3> The extrapyramidal side effects they cause are intractable. <4> When an antipsychotic does not improve symptoms, changing the treatment is not advisable. <5> It is advisable not to combine it with psychological treatment until the psychotic symptoms have disappeared.
[EX A]: 1

[EX Q]: Question: Statins are used to reduce cholesterol levels and act as analogs of the transition state of an enzyme involved in its biosynthesis. What enzyme is it? 
 Options:  <1> 14-Alpha-demethylase. <2> Hydroxymethylglutaryl coenzyme A (HMGCoA) reductase. <3> Cyclooxygenase 2 (COX-2). <4> Squalene epoxidase. <5> Aromatase
[EX A]: 2

[EX Q]: 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 A]:
3