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: Kinesin and dynein are: 
 Options:  <0> Adhesion proteins. <1> Microtubular motors. <2> Degradative enzymes <3> Components of the vesicular cover. <4> Transcriptional factors.
Example Output: biology

Example Input: Question: The primosome: 
 Options:  <0> It is also called primasa or Dna G protein. <1> It is the complex responsible for the synthesis of the Okazaki fragments. <2> It is a bacterial DNA ligase. <3> It is located in the mitochondria. <4> It is a functional unit of the bacterial replication complex.
Example Output: chemistry

Example Input: Question: Counter Coulter® particle counter uses an electrolytic solution of: 
 Options:  <0> 0.9% lithium chloride in water. <1> Ammonium thiocyanate in hydrophilic solvent. <2> 15% lithium chloride in hydrophobic solvent. <3> 0.9% sodium chloride in water. <4> 0.9% sodium chloride in methanol.
Example Output:
pharmacology