PLEASE HELP ME!!! Both, diffusion and dilution tests that expose pathogens to antimicrobials are designed to?

a. determine the spectrum of action of a drug


b. determine which drug is most effective against a particular pathogen


c. determine the amount of a drug to use against a particular pathogen


d. all of the above


e. both b and c

PLEASE HELP ME!!! Both, diffusion and dilution tests that expose pathogens to antimicrobials are designed to?
d) all of the above





A diffusion test uses paper discs placed on the surface of growth medium inoculated with a specific amount of the bacterium. The paper disc have been impregnated with the antibiotic being investigated. If the antibiotic works, there will be a 'zone of inhibition.' The size of the zone is proportional to the efficacy of the antibiotic.





A dilution test determines how much of the antibiotic determined to be the most effective it will take to kill the bacterium.





Accepted methods for testing can be found in USP.
Reply:i think its E!!
Reply:e) both b and c