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 sequencing of an oligosaccharide is done by:
Options: <0> Degradation Edman. <1> Chromatography Whatman. <2> Patch-Clamp. <3> Mass spectrometry. <4> Capillary electrophoresis.
Example Output: pharmacology

Example Input: Question: Thiamine pyrophosphate (PPT) is not coenzyme of:
Options: <0> Pyruvate dehydrogenase (synthesis of acetyl CoA). <1> Alpha-ketoglutarate dehydrogenase (citric acid cycle). <2> Transketolase (pentose phosphate pathway). <3> Transaldolase (pentose phosphate route). <4> Pyruvate decarboxylase (ethanolic fermentation).
Example Output: pharmacology

Example Input: Question: In certain cases it is necessary to carry out previous treatments with oxidizing or reducing agents in redox evaluations in order to:
Options: <0> Transform the analyte to an adequate oxidation state for subsequent evaluation. <1> Ensure that all the analyte is in solution. <2> Prepare the indicator solution so that it correctly rotates at the end point. <3> Make the reaction between titrator and analyte complete. <4> Improve the accuracy of the assessment.
Example Output:
pharmacology