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: If after establishing the confidence interval with respect to a difference between two independent means, we find that the zero value is not in the interval: 
 Options:  <1> We can not make any decision regarding the null hypothesis of equality of means. <2> We can not reject the null hypothesis of equality between population means. <3> We must reject the null hypothesis of equality between population means. <4> We accept the null hypothesis of equality between the population means. <5> We reject the alternative hypothesis of equality between population means.

Ex Output:
3


Ex Input:
Question: The main pharmacological treatment for obsessive-compulsive disorder or OCD is: 
 Options:  <1> Dopamine agonists. <2> NMDA receptor blockers. <3> Inhibitors of monoamine oxidase or MAOIs. <4> Selective serotonin or 5-HT reuptake inhibitors. <5> Neuroleptics

Ex Output:
4


Ex Input:
Question: Taking into account the relationships between the theory of the four temperaments and the personality model of H.J. Eysenck, an angry temper will correspond to a person: 
 Options:  <1> Introverted and Stable Emotional. <2> Apathetic and Stable Emotional. <3> Introverted and Unstable Emotional. <4> Extroverted and Unstable Emotional. <5> Introverted and Anxious

Ex Output:

4