Under the supervision of the registered nurse, a student nurse is changing the dressing of a 49-year-old woman with a newly inserted peritoneal dialysis catheter. Which of the following activities, if performed by the student nurse after removal of the old dressing, would require an intervention by the registered nurse?

D The student nurse securely tapes the edges of the sterile dressing with paper tape. A The student nurse cleans the catheter insertion site using a sterile cotton swab soaked in povidone-iodine. C The student nurse cleans the insertion site using a circular motion from the outer abdomen toward the insertion site. B The student nurse applies two sterile precut 4 ├âÔÇö 4s to the catheter insertion site.