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: In which of the drugs with antiviral activity does the purine base called guanine appear?
Options: <0> Lamivudine <1> Zidovudine <2> Ribavirin <3> Acyclovir <4> Didanosine
[EX A]: pharmacology

[EX Q]: Question: Proton pump inhibitor drugs are useful in the treatment of:
Options: <0> Constipation. <1> Corneal ulcer. <2> Peptic ulcer. <3> Traveler's diarrhea. <4> Crohn's disease.
[EX A]: nursery

[EX Q]: Question: Which of the following statements about the technique of emotive images is FALSE?
Options: <0> It is a variant of systematic desensitization. <1> It was developed to treat phobias of small children or with difficulties to relax. <2> It is a multicomponent program for the treatment of childhood phobias. <3> It is usually induced an inhibitory response to anxiety other than relaxation. <4> It can be used for the treatment of medical fears.
[EX A]:
psychology