Which of the following applies to the Kirby-Bauer test? Select all that apply. 1. This test determines if an antibacterial drug is bacteriostatic or bactericidal.

2. Bacteria that have a zone of inhibition are considered susceptible to the tested drug.

3. Bacteria that lack a zone of inhibition are resistant to the tested drug.

4. This test determines if a bacterium is resistant to a specific antibacterial drug.

5. This test reveals if a bacterium is a pathogen.