A nurse is collecting data from a client who is postoperative. Which of the following findings should the nurse identify as objective data? (Select All that Apply)

The clients current blood pressure is below their preoperative reading

The clients urine output has been 150 mL over the past 3 hours

The client is reporting nausea

The clients right calf is swollen and warm to the touch

The client states they are experiencing "extreme pain"