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: If in an epidemiological study, the participating population has voluntariness as an inclusion criterion, the validity of the results are subject to a bias of: 
 Options:  <0> Information. <1> Confusion. <2> Selection. <3> Interpretation. <4> Publication.
Example Output: nursery

Example Input: Question: What type of amino acid side chains will compete with saline ions for solvation water ?: 
 Options:  <0> Apolares. <1> Aliphatic <2> Aromatic <3> Polar <4> Without charge.
Example Output: chemistry

Example Input: Question: The most abundant immunoglobulin isotype produced by plasma cells of mucosal-associated lymphoid tissue is: 
 Options:  <0> IgM <1> IgD. <2> IgG <3> IgA <4> IgE
Example Output:
biology