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.

Ex Input:
Question: The following may occur in multimeric form associated with the J chain: 
 Options:  <0> IgA and IgG. <1> IgD and IgM, <2> IdE and IgD. <3> IgA and IgD. <4> IgA and IgM.

Ex Output:
biology


Ex Input:
Question: Esters can be obtained from carboxylic acids and alcohols, by applying the Fischer esterification reaction in which: 
 Options:  <0> A base is used as a catalyst. <1> A ketone is used as the solvent. <2> A reducing reagent is used. <3> An oxidizing agent is used. <4> Acid catalysis is used.

Ex Output:
pharmacology


Ex Input:
Question: In its origins, the technique of Systematic Desensitization was explained from: 
 Options:  <0> Operant conditioning. <1> Conditioning in a single trial. <2> Classical conditioning. <3> Vicar conditioning. <4> Instrumental conditioning.

Ex Output:

psychology