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'.

Input: Consider Input: Question: It has been proven that amphetamines have reinforcing effects because: 
 Options:  <1> They are GABAergic agonists. <2> They are dopaminergic antagonists. <3> They are serotonergic antagonists. <4> They are dopaminergic agonists. <5> They are serotonergic agonists.

Output: 4


Input: Consider Input: Question: A primary standard solution in a titration should not: 
 Options:  <1> Be prepared from a high purity reagent. <2> Have an exactly known concentration. <3> Keep your composition over time. <4> React instantly. <5> Give rise to secondary reactions.

Output: 5


Input: Consider 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.


Output: 5