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: They incorporate sterols to their plasma membrane: 
 Options:  <1> Mycobacterium tuberculosis. <2> Micrococcus luteus. <3> Mycoplasma pneumoniae <4> Chlamydia trachomatis. <5> Rickettsia prowazekii.
[EX A]: 3

[EX Q]: Question: Which of the following molecules has the highest number of antibonding electrons? 
 Options:  <1> B2. <2> N 2 <3> Li2. <4> F 2 <5> O 2
[EX A]: 4

[EX Q]: Question: Point out the correct statement about the parent training program created by Barkley: 
 Options:  <1> Its main objective is to improve the social and communication skills of children. <2> Its main objective is to improve the children's self-control skills. <3> Prohibits the use of any type of punishment, including time out. <4> One of its objectives is to reduce the conflicts that may arise in the school context. <5> Sessions are held with the children in parallel with those of the parents.
[EX A]:
4