In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

[EX Q]: Question: Which of the following statements about the steady-state infusion of a drug is true? 
 Options:  <0> The concentration reached in steady state of equilibrium depends exclusively on the clearance. <1> The time necessary to reach the steady state of equilibrium depends on the volume of distribution. <2> The concentration reached in a steady state depends exclusively on the elimination half-life. <3> The concentration achieved in the steady state equilibrium depends on the clearance and the infusion rate. <4> The time required to reach the steady state of equilibrium depends on the clearance.
[EX A]: pharmacology

[EX Q]: Question: Indicate which of the following safety precautions used in the care of the patient receiving brachytherapy is NOT true: 
 Options:  <0> Single room. <1> Prohibition of visits of children. <2> Radiation meters for health personnel. <3> Reverse isolation. <4> Limitation of the time of the visits.
[EX A]: nursery

[EX Q]: Question: In the treatment of depression, therapy or training in social skills focuses mainly on improving classes or repertoires of behaviors that are especially relevant for depressed individuals and among which is the positive assertion. What kind of behavior does the positive assertion refer to? 
 Options:  <0> Behaviors that allow the person to defend their rights and interests. <1> Conduct to initiate conversations, ask questions and perform appropriate self-revelations. <2> Conduct regarding the expression of affection, approval and praise towards other people. <3> Behaviors to impose one's own interests over the interests of others. <4> Behaviors to generate positive emotions when a person is alone.
[EX A]:
psychology