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.

Q: Question: The arginosuccinasa: 
 Options:  <0> In an enzyme of the citric acid cycle. <1> Converts arginine to lysine. <2> It is activated by the allosteric effector N-acetylglutamate. <3> It produces fumarate. <4> It is a glycogenic amino acid.

A: chemistry
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Q: 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.

A: psychology
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Q: Question: In what clinical situation would you use a combined antimicrobial treatment? 
 Options:  <0> In an acute pharyngotonsillitis in a child. <1> In a community pneumonia due to Mycoplasma pneumoniae in a teenager. <2> In an acute meningitis in an elderly patient. <3> In a postmenopausal patient with a recurrent urinary infection. <4> In a skin abscess in a young patient.

A:
medicine
****