To determine the likelihood that a patient with a bacterial infection who is in the intensive care unit (ICU) of a hospital could be successfully treated with antibiotic therapies, researchers investigated the frequency of antibiotic resistance in bacteria isolated from patients in ICUs in the United States from 1994 to 2000. The data from the study are shown in the table, along with the overall change in the frequency of bacterial resistance in patient samples from 1994 to 2000.
A patient was admitted to the ICU in December 2000 with an uncharacterized bacterial infection. Based on the date from the study, identify:
-the antibiotic that was most likely to be effective for treating the infection
-the antibiotic that was least likely to be effective for treating the infection