You will be given a definition of a task first, then some input of the task.
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.

Question: Sodium borohydride is a reagent used in Organic Chemistry for its properties such as: 
 Options:  <0> Reducer. <1> Oxidizer <2> Alkylator <3> Acid. <4> Organometallic.
Output:
chemistry