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: A cyclic voltammetry: 
 Options:  <0> It is based on a stationary broadcasting regime. <1> It uses macroelectrodes as working electrodes. <2> He never needs a potentiostatic system. <3> It is always done in a non-agitated solution. <4> It uses a square wave potential format as an excitation system.
Example Output: chemistry

Example Input: Question: In relation to the physiology of the complement system, one of the following statements is false: 
 Options:  <0> Most of its components are inactive. <1> Its mode of activation is similar to the coagulation cascade. <2> It is subject to strict control of regulatory mechanisms. <3> It is only activated by two different routes: the classical and the alternative. <4> During its activation, multimolecular complexes are formed.
Example Output: pharmacology

Example Input: Question: To detect small deletions or duplications at the genomic level, the technique of choice would be: 
 Options:  <0> Karyotype of bands G. <1> Genomic microarrays. <2> Expression microarrays. <3> PCR <4> RT-PCR.
Example Output:
biology