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: Azidothymidine (AZT) used against the human immunodeficiency virus: 
 Options:  <1> It binds to the cellular RNA polymerase and blocks transcription. <2> It binds to the early promoter of the virus and prevents its recognition by RNA polymerase. <3> Antagonizes the phosphorylation of nucleosides, thus inhibiting the synthesis of viral DNA. <4> Blocks the transport of thymidine to the cellular interior. <5> Inhibits transcriptase
[A]: 5


[Q]: Question: Virgina Henderson describes the relationship of the nurse with the patient in the following structure: 
 Options:  <1> Levels: Substitution. Help. Accompaniment. <2> Roles: Strange. Person resource. Teacher. Leadership. Substitute. Advice. <3> Skills: Beginner Advanced beginner Effective. Expert. <4> Help modes: Act for another. Lead another. Support another. Provide an environment that fosters development. Teach another <5> Styles: Stimulation. Confirmation. Conservation and continuity of life. Self-image Compensation and rest.
[A]: 1


[Q]: Question: Base peak in a mass spectrum is called a: 
 Options:  <1> The largest or most intense peak. <2> The heaviest pair peak. <3> The lightest isotopic peak. <4> The peak that corresponds to its nominal mass. <5> The odd peak heavier.
[A]:
1