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

The client's current blood pressure is below their preoperative reading.

The client's right calf is swollen and warm to the touch.

The client is reporting nausea.

The client states they are experiencing "extreme pain".

The client's urine output has been 150 mL over the past 3 hr.