A nurse is collecting data from a client who is 2 days postoperative following abdominal surgery. Which of the following findings is a manifestation that can indicate an infection?

A. Temperature of 37.2° C (99.0° F): A temperature of 37.2° C is within the normal range and does not necessarily indicate infection. Mild temperature elevations are common in the immediate postoperative period due to inflammatory responses rather than infection, which typically presents with more significant fever. B. Elevated WBC count: An elevated white blood cell (WBC) count is a classic and early indicator of infection. It reflects the body's immune response to a bacterial or viral invasion, and postoperative infections often present with leukocytosis, making it a key finding to monitor closely. C. Pain rating of 4 on a scale of 0 to 10: Moderate pain is expected after surgery and does not, by itself, suggest infection. Postoperative pain should be assessed in context with other symptoms like redness, swelling, or drainage; pain alone, especially if stable, is not definitive for infection. D. Increased urinary output: Increased urinary output is generally a positive sign of good kidney perfusion and hydration status. A decrease, not an increase, in urinary output would be more concerning postoperatively and could suggest complications, but not necessarily infection.