A Postoperative Patient Is Complaining of Incisional Pain

A postoperative patient is complaining of incisional pain.An order has been given for morphine every 4 to 6 hours as needed (PRN) .The first assessment by the nurse should be to:

A) Assess for the presence of bowel sounds.
B) Assess pupillary reaction.
C) Ask the patient's family if she is having pain.
D) Determine when the patient last received pain medication.