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: Why is chlorophyll green ?: 
 Options:  <1> Absorbs all wavelengths of the visible spectrum. <2> Absorbs wavelengths only from the red and ultra-red parts of the spectrum (680nm, 700nm). <3> Absorbs wavelengths in the red and blue parts of the visible spectrum. <4> Absorbs wavelengths only from the blue part of the visible spectrum. <5> Absorbs in the near ultraviolet.
[EX A]: 3

[EX Q]: Question: In the pharmacological treatment of hallucinations and delusions, what is the correct answer? 
 Options:  <1> Between 30-50% of people with psychosis treated with antipsychotics continue to experience difficulties derived from clinical symptoms. <2> Antipsychotics act on the positive symptoms of psychosis, but mainly eliminate the negative symptoms. <3> The extrapyramidal side effects they cause are intractable. <4> When an antipsychotic does not improve symptoms, changing the treatment is not advisable. <5> It is advisable not to combine it with psychological treatment until the psychotic symptoms have disappeared.
[EX A]: 1

[EX Q]: Question: The loss of linearity of the calibration line when the fluorescence intensity is used as an analytical parameter may be due to: 
 Options:  <1> Changes in solvent density as the concentration of fluorescent analyte increases. <2> Dissolved oxygen, due to its diamagnetic character, which favors intersystem crossing. <3> The presence of static inhibitors of the incident radiation. <4> Internal conversion, in which the energy absorbed can be transformed into heat energy. <5> Self-absorption, to the internal effect of bucket and to the formation of dimers and excimers.
[EX A]:
5