Ms. S is a 55-year-old woman who is morbidly obese and 2 days postoperation for knee surgery. You notice a strong scent of urine when you enter the room. There is a bedside commode and a bedpan in the room. What should you do first?

A. Instruct the UAP to assist the patient with hygiene.
B. Try to determine the source of the urine odor.
C. Check the intake and output (I & O) record for urine output and the nurses' notes for problems with voiding.
D. Review the medical records for a history of urinary incontinence.