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: When an experimental design is carried out, it is fundamentally sought:
Options: <0> Know better the average of the results obtained and repeated in an experiment. <1> Know better the median of the results obtained in an experiment. <2> Identify better the factors that can affect the experiment. <3> To better identify the regression equations in an experiment. <4> To know better the standard deviation of the different data in the experiment.

A: chemistry
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Q: Question: Which glands are located between the skin and the masseter muscle, in front and under the outer ear?
Options: <0> Parotid glands <1> Submandibular glands <2> Sublingual glands <3> Mouth glands <4> Lieberkuhn's glands.

A: pharmacology
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Q: Question: The number of nodes of the LUMO (unoccupied orbital of lower energy) of 1,3-butadiene is:
Options: <0> None. <1> One. <2> Two. <3> Three. <4> Four.

A:
chemistry
****