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.

Example Input: Question: The secretion of the sebaceous glands is: 
 Options:  <0> Merocrine <1> Apocrine <2> Paracrine <3> Holocrine <4> Endocrine
Example Output: biology

Example Input: Question: Controls the passage of substances to the central nervous system: 
 Options:  <0> Meninges. <1> Choroid plexus. <2> Hemato-encephalic barrier. <3> White substance <4> Schwann cells and oligodendrocytes.
Example Output: biology

Example Input: Question: The corrector Zeeman: 
 Options:  <0> It is widely used in Molecular Fluorescence to correct the internal filter effect. <1> It is a basic corrector in atomic absorption spectrometry, which is based on the property that atoms have in the form of atomic vapor of unfolding their electronic energy levels when subjected to an intense magnetic field, originating different emission lines for each transition electronics. <2> It is based on the phenomenon of self-absorption that occurs when the hollow cathode lamp is subjected to high currents and is widely used in atomic absorption spectrometry. <3> It is based on the emission of continuous radiation in the ultraviolet region of a deuterium lamp, used as a background corrector. <4> It is a corrector of chemical interferences, widely used in atomic emission spectrometry.
Example Output:
chemistry