A group of nurses are reviewing surgical asepsis. Which statement by one of the nurses requires further teaching on the topic?

B The edges of a sterile field are considered unsterile. E Airborne microorganisms can contaminate sterile objects and make them unsterile. D Sterile objects that are out of view or below waist level are considered unsterile. C If a sterile object touches an unsterile object, the sterile object is considered contaminated. A Full-strength chlorhexidine will sterilize the skin.