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: Catalase:
Options: <1> Acts on hydrogen peroxide. <2> It results in the formation of hydrogen peroxide. <3> It acts on the superoxide anion. <4> It converts hydrogen peroxide into superoxide anion. <5> Use glutathione as a cofactor.
[EX A]: 1

[EX Q]: Question: When the individual is unable to remember important personal information, usually a traumatic or stressful event, what disorder can we think of, within the group of dissociative disorders (DSM-IV-TR)?
Options: <1> Dissociative identity disorder. <2> Dissociative trance disorder. <3> The generalized amnesia. <4> The dissociative amnesia. <5> The dissociative leak
[EX A]: 4

[EX Q]: Question: Which of these species is a free radical?
Options: <1> The molecule NO. <2> The O2 molecule. <3> The N2O molecule. <4> The OH- anion. <5> The ClO- anion.
[EX A]:
1