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.

Question: A coulometric evaluation: 
 Options:  <0> You do not need the current performance to be 100%. <1> It does not need an indicator system of the end point. <2> Always use a potentiostatic system. <3> It uses a titrant that is generated electrolytically. <4> You need a burette to add the titrant.
chemistry

Question: What are the components of the habit inversion procedure for the treatment of tics? 
 Options:  <0> The self-registration of tics and relaxation. <1> Self-control and contingency management by parents. <2> Exposure with response prevention and cognitive restructuring. <3> The training in increasing awareness of the occurrence of tics and the practice of a competitive response. <4> Relaxation and the practice of a competitive response.
psychology

Question: Suppose that 40% of patients respond to treatment A. The average cost with A for the patients who respond is € 2,000 per patient. The average cost with A for patients who do not respond is € 5,000. What is the expected cost of treatment A for a patient ?: 
 Options:  <0> € 2,000 <1> € 3200 <2> € 3500 <3> € 3,800. <4> € 5,000

pharmacology