Detailed Instructions: 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'.
Problem:Question: HEPA filters are used for the sterilization of:
Options: <1> Organic liquids <2> Air. <3> Culture broth <4> Antibiotics <5> Sugar solutions
Solution:
2