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 medium that is used to detect the production of acetoin (butylene glycol) from pyruvic acid in the fermentation of glucose is called:
Options: <0> Kligler. <1> Methyl red. <2> Voges Proskauer. <3> ONPG (ortho-nitrophenyl-galactopyranoside) <4> Beta-glucuronidase.
[A]: pharmacology

[Q]: Question: The non-selective medium commonly used for the growth of gonococcus (Neisseria gonorrhoeae) is:
Options: <0> Chocolate agar. <1> Agar blood. <2> Mannitol saline agar. <3> Nutritious agar <4> MacConkey agar.
[A]: biology

[Q]: Question: The chemical reactions of the splicing process of the introns during the maturation of the pre-mRNAs consists of:
Options: <0> An oxidation-reduction reaction. <1> A transesterification reaction. <2> Two sequential transesterification reactions. <3> Three sequential transesterification reactions. <4> A transesterification reaction followed by another oxidation reaction.
[A]:
chemistry