Which of the Following Statements About Scanning Patients with Colostomies

Which of the following statements about scanning patients with colostomies or ileostomies is untrue?

A) Sterile technique is used whenever removing or changing dressings or bags.
B) When the old appliance is removed, the area around the stoma must be cleansed.
C) A folded gauze pad must be taped to the open stoma to absorb any discharge.
D) The contents of the old appliance may be flushed down the toilet.