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 minimum amount of auditory stimulation needed to begin to identify the lyrics of a song is a threshold: 
 Options:  <0> Absolute. <1> Subliminal. <2> Differential. <3> Relative. <4> Musical.
[A]: psychology


[Q]: Question: The reaction of an alkene with metachloroperbenzoic acid causes a cyclic ether which is called: 
 Options:  <0> Furano <1> Dioxane <2> Epoxide <3> Azirano <4> Lactone
[A]: chemistry


[Q]: Question: Typically the species of the genus Leptospira: 
 Options:  <0> They have movement by perimeter flagellation. <1> They present endoflagelos. <2> They are anaerobic. <3> They form prostecas. <4> They are diners.
[A]:
biology