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: If you want to estimate the effects of an intervention, you will use: 
 Options:  <1> A transversal design. <2> A retrospective design <3> An ecological study. <4> A randomized clinical trial. <5> An observational design with random selection of the participants.
Example Output: 4

Example Input: Question: E. H. is a 64-year-old lady diagnosed with hypertension and assisted by her nurse in the corresponding program. The activities carried out by the nurse are aimed at regulating the exercise and development of the self-care agency of E. H. The lady performs her self-care and regulates the exercise and development of her self-care agency. This organization of care is described by Orem as a system: 
 Options:  <1> Partially compensatory. <2> Support-education. <3> Completely compensatory. <4> Complementation <5> Of shared regulation and development.
Example Output: 2

Example Input: Question: Regarding telomerases, which of the following statements is not true ?: 
 Options:  <1> They have reverse transcriptase activity. <2> They prevent shortening of telomeres. <3> Its defect promotes carcinogenesis. <4> Its activity is essential for the stability of chromosomes. <5> They are ribozymes.
Example Output:
3