Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: The producers of many antibiotics for medical use are: 
 Options:  <1> Myxobacteria <2> Cyanobacteria <3> Spirochetes <4> Streptomycetes <5> Alpha proteobacteria.
