A nurse is caring for four clients who are postoperative from surgery 24 hr ago. At 1200 the nurse assesses the clients. Which of the following clients is the nurse's priority?

A postoperative client whose blood pressure at 0800 was 138/86 mm Hg and now at 1000 is 90/60 mm Hg

A client who has a prescription for insulin and his premeal capillary blood glucose was 110 mg/dL and his post-meal capillary blood glucose is now 100 mg/dL

A client whose wound drainage at 0800 was sanguineous and now it is serosanguineous

A client who reports pain as 1 on a scale of 1 to 10 at 0800 now reports pain as 3