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: It contains an imidazole group the side chain of: 
 Options:  <0> Arginine <1> Tyrosine <2> Glutamine <3> Histidine <4> Lysine
Output:
biology