While Passing Noon Meds, an RN Notes That One of Her

While passing noon meds, an RN notes that one of her patients did not receive his 0600 dose of antibiotic during the prior shift. She calls the prior nurse to try to determine whether the medication was given, then fills out an occurrence or care aberrance report, and follows through as institutional policy indicates. What is the best explanation for why the RN who found the error took action?

A) Because the prior nurse needed to know she made an error
B) Because she is accountable for not contributing to the error by ignoring it
C) To keep the patient from suing the hospital
D) To keep herself out of trouble