The Infection Control Nurse Explains to the Staff That Resistant

The infection control nurse explains to the staff that resistant organisms, like vancomycin-resistant Enterococcus (VRE) , evolve by

A) colonizing a client who has had repeated nosocomial infections.
B) contact with the host's weakened immune system.
C) infecting a client with a history of untreated infections.
D) mutation of the pathogen because of frequent exposure to antibiotics.