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 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> Ependimo. <4> Seminiferous tubule.
[A]: pharmacology

[Q]: Question: Why is the presence of lentigo in older people?
Options: <0> Cell dehydration <1> Small hemorrhages due to capillary fragility. <2> Hyperplasia of intraepidermal melanocytes. <3> Deficiency of collagen and elastin. <4> Lipofuscin deposits.
[A]: nursery

[Q]: Question: Secondary chromosomal constrictions contain:
Options: <0> Single sequence DNA <1> Ribosomal genes. <2> Genes micro-RNAs. <3> Centromeric DNA. <4> Genes of histomnas.
[A]:
biology