Following Rectal Surgery,a Patient Voids About 50 ML of Urine

Following rectal surgery,a patient voids about 50 mL of urine every 30 to 60 minutes.Which nursing action is most appropriate?

A) Use an ultrasound scanner to check for residual urine after voiding.
B) Have the patient take small amounts of fluid frequently throughout the day.
C) Reassure the patient that this is normal after rectal surgery because of the anaesthesia.
D) Monitor the patient's intake and output over the next few hours.