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'.

[Q]: Question: Indicate, which of the compounds listed below, has a higher acidity: 
 Options:  <1> Acetic acid. <2> Hydrogen bromide <3> Sulfuric acid. <4> Carbonic acid. <5> Nitric acid.
[A]: 2


[Q]: Question: The excitotoxins activate: 
 Options:  <1> Nicotinic receptors <2> GABAA receptors <3> Glycine receptors. <4> NMDA receivers. <5> Na + channels dependent on voltage.
[A]: 4


[Q]: Question: In accounting, which of the following elements should be included in the LIABILITIES of an estate? 
 Options:  <1> Credits in favor of third parties. <2> Quantities that customers owe. <3> Money in banks. <4> Money in credit institutions. <5> The store.
[A]:
1