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 Q]: Question: A patient with peripheral occlusive arteriopathy who presents intermittent claudication will be recommended:
Options: <1> Absolute rest to reduce the demands of O2. <2> Elevate the legs to reduce pain. <3> Apply dry heat to the legs to promote vasodilation. <4> Walk on flat surfaces. <5> Use gradual compression stockings.
[EX A]: 4

[EX Q]: Question: When administering oxygen therapy to a patient admitted to the emergency room due to exacerbated COPD, you should take into account that:
Options: <1> The flow of oxygen must be high, since respiratory failure is accompanied by hypoxia. <2> The concentration of oxygen is conditioned by the patient's clinical situation. <3> The concentration of oxygen must be equal to the atmospheric concentration, since the patient presents hypercapnia. <4> The flow should be low, since hypoxia is the only stimulus to breathe. <5> The flow must be adjusted to achieve a PO2 greater than 90 mmHg.
[EX A]: 4

[EX Q]: Question: Regarding the NANDA-I taxonomy, it is correct to affirm that:
Options: <1> All the diagnoses contained in the taxonomy are appropriate for all practicing nurses. <2> All the proposed diagnoses are relevant for all specialties. <3> There are diagnoses that may be outside the scope of exercise that governs the nurse practice of a specific area. <4> The use of the diagnoses contained in the classification supports their use over the regulations that may exist in a specific area. <5> The taxonomy must adjust to each reality, removing those diagnoses that are not usual and including those that do not appear in the classification and represent common problems.
[EX A]:
3