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: Sumatriptan is a first generation anti-migrant triptan, structurally characterized by having a heterocycle: 
 Options:  <0> Imidazoic <1> Piperidinic <2> Indic. <3> Pirrólico. <4> Oxazolic.
[EX A]: pharmacology

[EX Q]: Question: As to the height of the plate (H) in a column chromatographic separation it can be said that: 
 Options:  <0> It is inversely proportional to the variance (standard deviation of the band). <1> It is directly proportional to the number of theoretical plates and inversely proportional to the length of the column. <2> It is directly proportional to the variance and inversely proportional to the distance traveled by the center of the band to the detector (L). <3> It is directly proportional to the variance and distance traveled by the center of the band to the detector (L). <4> It does not depend on the variance or the distance traveled by the center of the band.
[EX A]: pharmacology

[EX Q]: Question: They are involved in the lytic action of cytotoxic T lymphocytes: 
 Options:  <0> Granzimas <1> Opsonins. <2> Histamines <3> Integrins <4> Cathepsins.
[EX A]:
biology