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: Indinavir is a selective inhibitor of HIV protease because:
Options: <1> By hydrolysis, the active drug is generated. <2> Rents irreversibly the active center of the enzyme. <3> Its structure mimics the transition state of the reaction catalyzed by the enzyme. <4> It is a suicide inhibitor. <5> Its symmetric structure interacts effectively with the active center of the enzyme.

Ex Output:
3

Ex Input:
Question: What type of primary prevention intervention is indicated during the pre-pathogenic period of cardiovascular diseases ?:
Options: <1> Carry out the assessment of cardiovascular risk using the SCORE scale from adolescence. <2> Control of total cholesterol levels periodically based on age. <3> Blood pressure control periodically based on age. <4> Promotion of healthy lifestyles: tobacco consumption, diet and exercise mainly. <5> All measurements are indicated.

Ex Output:
4

Ex Input:
Question: Which of the following antibiotics could be used in a patient with hypersensitivity to penicillin by skin tests ?:
Options: <1> Piperacillin / tazobactam <2> Aztreonam <3> Ampicillin <4> Amoxicillin <5> Ceftazidime

Ex Output:
2