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 Input:
Question: Histone deacetylases (HDAC) promote:
Options: <0> A less condensed chromatin. <1> A weaker link between histones and DNA in nucleosomes. <2> The acetylation of lysine residues in histones. <3> That the poly (A) tail of the histone messenger RNAs be more extensive. <4> The termination of the transcription and the genetic silencing.

Ex Output:
pharmacology

Ex Input:
Question: What are the leaders of the Structural / Strategic School of Systemic Therapy?
Options: <0> O'Hanlon and Weiner-Davis. <1> Haley and Minuchin. <2> Weakland and Fisch. <3> Keeney and Ross. <4> Stierlin and Weber.

Ex Output:
psychology

Ex Input:
Question: Free samples of industrially manufactured medicines are considered exceptional publicity; as such, they will only be delivered during a maximum time of:
Options: <0> One year from the date of authorization of the medication. <1> Five years from the date of authorization of the medication. <2> Six months from the date of authorization of the medication. <3> Two years from the date of authorization of the medication. <4> One month from the date of authorization of the medication.

Ex Output:
pharmacology