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: The presence of foreign bodies such as small buttons, sunflower seeds, etc., in the respiratory tract in young children is a relatively frequent accident. Point out the signs that appear when these objects are lodged in the lower respiratory tract: 
 Options:  <1> Episodes of cough, hoarseness and dyspnea. <2> Chronic cough, hypoventilation on auscultation, signs of infection. <3> Asphyxia, dyspnea, cyanosis, respiratory failure. <4> Fever, cough and dysphonia. <5> Tachypnea, increased respiratory effort.
[EX A]: 2

[EX Q]: Question: In the parasympathetic system: 
 Options:  <1> The preganglionic neuron is in thoracic spinal cord. <2> Postganglionic neurons have short axons. <3> Postganglionic fibers release noradrenaline. <4> Postganglionic neurons have muscarinic receptors. <5> Numerous neurons innervate vascular smooth muscle of the extremities.
[EX A]: 2

[EX Q]: Question: A 32-year-old man with no history of interest or cardiovascular risk factors. Clinic of dyspnea when climbing a floor of stairs of 1 month of evolution. Consultation due to sudden syncope preceded by exertion. Family history of death not explained abruptly in his brother. On physical examination, a more audible rumen systolic murmur with aortic focus is highlighted. The electrocardiogram performed in the consultation shows a sinus rhythm with a compatible pattern of left ventricular hypertrophy. An echocardiogram was performed to document an important asymmetric hypertrophy of the interventricular septum with a subvalvular dynamic gradient of 70 mmHg with moderate secondary mitral regurgitation and preserved left ventricular ejection fraction. Which therapeutic option is the LESS indicated? 
 Options:  <1> Beta-blockers. <2> Digoxin <3> Calcium-non-dihydropyridine antagonists. <4> Implantable automatic defibrillator. <5> Surgical septal myomectomy of Morrow.
[EX A]:
2