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 chloride present in a solution can be determined volumetrically, by the Mohr method, using Ag (I) as a reagent. What indicator is used in this assessment ?: 
 Options:  <0> K2Cr2O7. <1> Fe2 (SO4) 3. <2> K2CrO4. <3> KSCN <4> FeSO4.

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: Pyruvate carboxylase is allosterically activated by one of the following compounds, what is it? 
 Options:  <0> Pyruvate. <1> Acetyl-CoA. <2> Malate. <3> Oxalacetate. <4> NAD +.

Ex Output:

chemistry