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 chemical reactions of the splicing process of the introns during the maturation of the pre-mRNAs consists of:
Options: <0> An oxidation-reduction reaction. <1> A transesterification reaction. <2> Two sequential transesterification reactions. <3> Three sequential transesterification reactions. <4> A transesterification reaction followed by another oxidation reaction.
[A]: chemistry

[Q]: Question: Which of these statements is FALSE regarding stupor?
Options: <0> It is an alteration of consciousness. <1> It can occur in melancholy. <2> It supposes a reversible state by moderate stimuli. <3> The term is used in states of mutism and reduction of motor activity. <4> In Neurology it is a state that precedes coma.
[A]: medicine

[Q]: Question: The treatment of choice for Post Traumatic Stress Disorder in childhood is:
Options: <0> The cognitive restructuring. <1> The exhibition, both in imagination and live. <2> No treatment has been proven more effective than the rest. <3> Planning of pleasant activities and training in social skills. <4> The relaxation technique alone has proven to be more effective than the rest.
[A]:
psychology