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 Q]: Question: Among the partial reactions that lead to sodium carbonate by the Solvay Process, are: 
 Options:  <0> The reaction between calcium carbonate and sodium chloride. <1> The precipitation of sodium hydrogen carbonate. <2> The thermal decomposition of ammonium chloride. <3> The formation of CaCO3 from CaO and CO2. <4> The reaction of ammonia with calcium oxide.
[EX A]: chemistry

[EX Q]: Question: Within the Psychological Evaluation, the Self Registers, as a strategy to obtain information, how can they be considered? 
 Options:  <0> As a type of Experimental technique. <1> As a type of Self-reports. <2> As a modality of objective techniques. <3> As an Observational technique. <4> As a modality of the Semantic Differential of Osgood.
[EX A]: psychology

[EX Q]: Question: Acid-resistant alcohol staining is positive in bacteria of the genus: 
 Options:  <0> Mycoplasma. <1> Helicobacter <2> Borrelia. <3> Mycobacterium <4> Clostridium
[EX A]:
biology