Based on the principle of asepsis, the practical nurse (PN) should consider which situation to be sterile?

A. A sterile glove the PN thinks might have touched her hair: Once sterility is in doubt, the item must be considered contaminated. Hair carries microorganisms, and any possible contact violates aseptic technique. B. A wrapped, unopened sterile 4x4 gauze pad placed on a damp table top: Moisture carries microorganisms by capillary action, contaminating sterile objects on a wet surface. The pad is therefore no longer considered sterile. C. An open sterile Foley catheter kit set up on a table at the PN's waist level: The sterile field is maintained above waist level, within the PN’s direct view, and on a dry surface. This setup adheres to the principles of asepsis and can be considered sterile. D. A one-inch border around the edges of a sterile field set up in the operating room: The one-inch border is always considered contaminated, not sterile, because it may come into contact with nonsterile surfaces during setup or handling.