Check my work check my work button is now disableditem 1 item 1 0.24 points gentamicin is an antibiotic that is used to treat bacterial infections. a hospital reports a sudden outbreak of a new gentamicin-resistant strain of escherichia coli in 5 out of 25 patients of the intensive care unit. on further investigation, it was determined that this new strain was found only in patients that were also infected with a known gentamicin-resistant strain of klebsiella pneumonia. what is the most likely explanation for the development of this new antibiotic resistant strain of escherichia coli?