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: 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 Output:
chemistry

Ex Input:
Question: In strict vegetarians, a lack of one of the following vitamins may appear:
Options: <0> B12 vitamin. <1> Vitamin C. <2> Retinol <3> Folate <4> Niacin

Ex Output:
nursery

Ex Input:
Question: The microbiocidal action of iodine and chlorine and many of its derivatives is due to:
Options: <0> They are oxidizing agents. <1> They bind specifically to the active centers of the enzymes. <2> They bind specifically to ribosomal proteins. <3> They induce pores in the membranes. <4> They cause the dissolution of membrane phospholipids.

Ex Output:
biology