Select the Best Response to the Question

Select the best response to the question. What should be considered when a patient's urine culture result is positive for Escherichia coli ?

A) This is a normal finding; no treatment is needed.
B) The urine culture must be repeated to validate the findings.
C) Normal flora is causing infection in a part of the body where it doesn't belong.
D) This is an example of a pathogen that has invaded the body.