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: All the following statements describe characteristics of the peptide link EXCEPT: 
 Options:  <0> It has a trans configuration. <1> It is polar but without charge. <2> It forms a single bond by directly joining the α carbons of adjacent amino acids. <3> It does not present rotation around the link. <4> Is flat.
[EX A]: chemistry

[EX Q]: Question: In what type of hearing loss is the phenomenon of recruitment or recruitment characteristic? 
 Options:  <0> Transmission hearing loss. <1> Mixed hearing loss. <2> Central hearing loss. <3> Retrocochlear hearing loss. <4> Cochlear hearing loss.
[EX A]: medicine

[EX Q]: Question: The fear or belief of suffering an important disease, which arises in the subject from the erroneous interpretation of their bodily symptoms, is the nuclear characteristic of: 
 Options:  <0> The conversion disorder. <1> Hypochondria. <2> Panic disorder <3> The Depression <4> Somatization
[EX A]:
psychology