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 number of nodes of the LUMO (unoccupied orbital of lower energy) of 1,3-butadiene is: 
 Options:  <0> None. <1> One. <2> Two. <3> Three. <4> Four.

A: chemistry
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Q: Question: The tube of very small diameter and about 6 meters in length that runs along the posterolateral side of the testicle and connects with the vas deferens, is it called? 
 Options:  <0> Prostate. <1> Epididymis <2> Urethra. <3> Epéndimo. <4> Seminiferous tubule.

A: pharmacology
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Q: Question: The producers of many antibiotics for medical use are: 
 Options:  <0> Myxobacteria <1> Cyanobacteria <2> Spirochetes <3> Streptomycetes <4> Alpha proteobacteria.

A:
biology
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