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: A 29-year-old woman with a history of abundant rules and long-standing iron-deficiency anemia who have required treatment with ferrotherapy since she was 17 years old. Consult because after a tooth extraction you have hemorrhage that has required local hemostatic treatment. He relates that a maternal aunt presents frequent epistaxis. In analytical presents: 8000 leukocytes / uL, Hb 10.7 g / dL, VCM 76 fL, 380,000 platelets / uL; the biochemistry is normal. Prothrombin activity 90%; INR 0.9; Activated Partial Thromboplastin Time (APTT) 48 sec (39 sec) with an APTT ratio of 1.3 and fibrinogen derivative 340 mg / dL. What is the most likely diagnostic suspicion and how would it confirm it?
Options: <1> Hemophilia A and mixtures test. <2> Lupus anticoagulant and ANAS study. <3> Sideroblastic anemia and spinal aspiration. <4> Congenital thrombocytopathy and study of platelet aggregation. <5> Von Willebrand disease and determination of factor vW.

Ex Output:
5

Ex Input:
Question: Point out which of the following statements, regarding night terrors in childhood, is correct:
Options: <1> Usually the episode occurs in the last third of the night's sleep. <2> Usually, the child remembers the episode. <3> The symptoms show the existence of a somatic disorder. <4> There is a relative lack of response to other people's attempts to awaken it. <5> The subject has a quick access to the orientation and alert.

Ex Output:
4