To Reduce Patient Discomfort During a Closed Intermittent Catheter Irrigation

To reduce patient discomfort during a closed intermittent catheter irrigation, what should the nurse do?

A) Use room temperature irrigation solution.
B) Administer the solution as quickly as possible.
C) Allow the solution to sit in the bladder for at least 1 hour.
D) Raise the bag of the irrigation solution at least 12 inches above the bladder.