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: The anterior pituitary gland: 
 Options:  <1> It is part of the hypothalamus. <2> It is regulated hormonally. <3> It communicates with the neurohypophysis. <4> It releases ADH and oxytocin. <5> It is formed by neurons.
[EX A]: 2

[EX Q]: Question: The diagnostic sensitivity of an analytical magnitude for a certain disease is: 
 Options:  <1> 1 / specificity. <2> It depends on the prevalence of the disease. <3> It is the number of patients that give positive results among all possible individuals. <4> It is the quotient between the number of patients who give positive results for this magnitude and the total number of patients considered. <5> It is deducted directly from the minimum detectable value of this magnitude.
[EX A]: 4

[EX Q]: Question: In what kind of tasks do the attentional problems characteristic of attention deficit hyperactivity disorder manifest themselves? 
 Options:  <1> Simple, novel and targeting tasks. <2> Complex, novel and capacity tasks. <3> Simple, routine and selection tasks. <4> Complex, novel and organizational tasks. <5> Complex, routine and surveillance tasks.
[EX A]:
5