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: One of the following types of transport through membranes does NOT exist: 
 Options:  <0> Ion transport facilitated by ionophore (against electrochemical gradient). <1> Facilitated diffusion (in favor of electrochemical gradient) <2> Primary active transport (against electrochemical gradient). <3> Ionic channel (in favor of electrochemical gradient). <4> Simple diffusion (in favor of concentration gradient).
[EX A]: pharmacology

[EX Q]: Question: For the care of the nipple cracks during lactation it is recommended: 
 Options:  <0> Washed with water and neutral pH soap after each feeding. <1> Spread a few drops of milk and let air dry after the tetada. <2> The use of healing ointments. <3> 70º alcohol applied through sterile gauze between shots. <4> Apply cold between shots.
[EX A]: nursery

[EX Q]: Question: Among the criteria of DSM-IV for the diagnosis of Obsessive Compulsive Personality Disorder, are: 
 Options:  <0> A general pattern of concern for order, perfectionism, mental and interpersonal control at the expense of effectiveness, as well as a tendency to delegate to other tasks or work. <1> It shows rigidity and stubbornness, as well as a tendency to squander money. <2> Concern for details, rules, rules, lists, order, organization, schedules, until losing sight of the main objective of the activity. <3> Lax dedication to work and productivity, excluding leisure activities, unscrupulous in matters of morals and ethics. <4> Tendency to get rid of useless objects, even if they have a sentimental value. Miserly style in terms of expenses, both for him and for others.
[EX A]:
psychology