All of the Following Could Be Reasons Why Antimicrobic Treatment

Multiple Choice

All of the following could be reasons why antimicrobic treatment fails except

A) the inability of the drug to diffuse into the infected body compartment.
B) a mixed infection where some of the pathogens are drug resistant.
C) not completing the full course of treatment.
D) a disk diffusion test showing pathogen sensitivity to the antimicrobic.
E) diminished gastrointestinal absorption due to an underlying condition or age.