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: Which of the following characteristics defines an endogenous depression? 
 Options:  <1> Its course is continuous. <2> There is an evening worsening. <3> There is an early awakening. <4> There is a good response to placebo. <5> A neurotic personality intervenes in the etiopathogenesis.
Example Output: 3

Example Input: Question: The treatment of 1-hexyne with 1 mole of hydrogen bromide results in: 
 Options:  <1> 1-bromo-1-hexene. <2> 1-bromo-2-hexene. <3> 1-bromo-3-hexene. <4> 2-bromo-1-hexene. <5> 2-bromo-2-hexene.
Example Output: 4

Example Input: Question: One of the most effective techniques included in psychological intervention programs for primary female orgasmic dysfunction is: 
 Options:  <1> Vacuum therapy <2> The exhibition in imagination. <3> The pubococcygeus muscle training. <4> The systematic desensitization. <5> The stop and start technique.
Example Output:
3