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: Epidemiology allows early detection of changes in the incidence of a certain disease in the population. For this, the most correct thing is to use: 
 Options:  <1> The etiological investigation. <2> The description of the natural history of the disease. <3> Epidemiological surveillance. <4> The evaluation of the functioning of the services. <5> None of the previous answers is correct.

Ex Output:
3


Ex Input:
Question: The anterior pituitary gland: 
 Options:  <1> It is part of the hypothalamus. <2> It is regulated hormonally. <3> It communicates with the neurohypophysis. <4> It releases ADH and oxytocin. <5> It is formed by neurons.

Ex Output:
2


Ex Input:
Question: Which of the following techniques is considered, according to the available evidence, a well-established treatment in the case of childhood phobias: 
 Options:  <1> The training in HHSS. <2> The emotive images. <3> The therapy based on the game. <4> Systematic desensitization through eye movements. <5> The practice reinforced.

Ex Output:

5