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: Graphite is a conductor because: 
 Options:  <1> The valence band has electronic vacancies. <2> The driving band has electronic vacancies. <3> Both bands have electronic vacancies. <4> The banned band is very big. <5> The band gap is zero.
[A]: 5


[Q]: Question: A primary standard solution in a titration should not: 
 Options:  <1> Be prepared from a high purity reagent. <2> Have an exactly known concentration. <3> Keep your composition over time. <4> React instantly. <5> Give rise to secondary reactions.
[A]: 5


[Q]: Question: A 26-year-old woman with no previous psychiatric history, she went to the ER brought by her parents, who explained that she had been overactive, nervous, insomniac for a few days. They explain that he obsessively reviews the house's electrical installation in search of video cameras and microphones. In the interview, she tells us that she is being watched by the Police because she is a galactic correspondent with special powers. Which of the following options should NOT be considered as a differential diagnosis? 
 Options:  <1> Obsessive compulsive disorder <2> Schizophrenia. <3> Manic episode. <4> Psychosis due to the consumption of toxic substances. <5> Brain tumor.
[A]:
1