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: Mrs. H. H. 69 years old complains that she does not sleep well. Regarding sleep in the elderly, it has been proven that: 
 Options:  <0> The non-pharmacological approach to insomnia has proved ineffective in this population. <1> The aging process is one of the main causes of insomnia. <2> They have a worse quality sleep, more fragmented and with early awakenings. <3> For the treatment of insomnia, the benzodiazepines of long half-life are those with the least side effect. <4> All hypnotics have the same side effects in the elderly.
[EX A]: nursery

[EX Q]: Question: Acetylation of histones affects transcription: 
 Options:  <0> Blocking the incorporation of other components of the transcription machinery. <1> Preventing the remodeling of chromatin. <2> Facilitating the action of helicases. <3> Decreasing sensitivity to nuclear receptors. <4> Reducing the affinity of histones for DNA.
[EX A]: chemistry

[EX Q]: Question: Indicate the correct answer regarding the pancreas: 
 Options:  <0> Your alpha cells secrete insulin. <1> Its F cells produce somatostatin, which accelerates the secretion of glucagon. <2> Your alpha cells secrete glucagon, which increases the concentration of blood glucose. <3> It is an exclusively endocrine gland. <4> Its delta cells secrete pancreatic polypeptide.
[EX A]:
nursery