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: Raile and Marriner in their studies on the theoretical works in nursing, review different aspects among which are those referred to semantics and structure. This analysis of the concrete theoretical framework refers to: 
 Options:  <1> The simplicity <2> The generality <3> The empirical precision. <4> The deductible consequences. <5> The clarity.

A: 5
****
Q: Question: The R-bands of human metaphase chromosomes: 
 Options:  <1> They contain DNA rich in AT pairs. <2> They have high gene density. <3> They contain poor DNA in GC pairs. <4> They replicate at the end of phase S. <5> They have low gene density.

A: 2
****
Q: Question: Point out the correct answer. Lithium salts are used to treat: 
 Options:  <1> The affective symptoms of schizophrenia. <2> The psychotic symptoms of schizophrenia. <3> As a maintenance treatment for bipolar patients with a history of mania. <4> Depressive episodes of bipolar disorder, but not manic episodes. <5> In a drug in disuse and not recommended in the current clinical guidelines.

A:
3
****