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: Of the following reaction mechanisms, in which there is an inversion of the configuration from the reactant to the product of the reaction ?: 
 Options:  <1> Bimolecular nucleophilic substitution (SN2). <2> Unimolecular elimination (E1). <3> Unimolecular nucleophilic substitution (SN1). <4> Addition Markovnikov. <5> Addition anti-Markovnikov.
[EX A]: 1

[EX Q]: Question: In relation to intoxication by anticholinergic agents, point out the correct answer. 
 Options:  <1> In its treatment, atropine is used. <2> The presence of grade III or IV encephalopathy, acute renal failure and severe coagulopathy indicate liver transplantation. <3> Dantrolene is indicated in case of seizures. <4> The basic treatment consists of the repeated administration of activated charcoal and support measures. <5> The decrease in plasma cholinesterase confirms the diagnosis.
[EX A]: 4

[EX Q]: Question: Question linked to image nº3 A 64-year-old woman with no history of interest, with progressive dyspnea of ​​several weeks of evolution, whose frontal chest radiograph suggests a practically definitive radiological diagnosis. What would this be? 
 Options:  <1> Pulmonary thromboembolism with infarcts. <2> Pneumonia due to Pneumocystis jiroveci. <3> Alveolar proteinosis. <4> Pulmonary edema. <5> Chronic eosinophilic pneumonia.
[EX A]:
5