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: Sodium borohydride is a reagent used in Organic Chemistry for its properties such as: 
 Options:  <1> Reducer. <2> Oxidizer <3> Alkylator <4> Acid. <5> Organometallic.
Example Output: 1

Example Input: Question: Which of the following pairings between anticoagulant drug and mechanism of action is INCORRECT? 
 Options:  <1> Heparin - cofactor of antithrombin III. <2> Acenocoumarol - inhibits vitamin K epoxide reductase. <3> Dabigatran - inhibits thrombin. <4> Rivaroxaban - inhibits factor Xa. <5> Warfarin - inhibits the absorption of vitamin K.
Example Output: 5

Example Input: Question: Question linked to image # 3 In relation to the suspected diagnosis you have established, what would be the most appropriate confirmation test? 
 Options:  <1> Determination of pulmonary capillary pressure, using a Swan-Ganz catheter. <2> Bronchoalveolar lavage. <3> Thoracic computed tomography (pulmonary arteries). <4> Determination of eosinophils in peripheral blood. <5> Determination of anti-HIV antibodies.
Example Output:
4