The Daughter of an Older Frail Patient Recovering from Receiving

The daughter of an older frail patient recovering from receiving the wrong medication asks what the hospital can do to prevent this from happening again. How should the nurse respond to the daughter?

A) "There isn't much that can be done; accidents happen."
B) "Medication errors sometimes happen because we are so short-staffed."
C) "The physician's handwriting was misread; we are talking to him about this issue."
D) "We are discussing installing a bar-code system to identify patients and medications."