A woman who has undergone a right-sided modified-radical mastectomy returns from surgery. Which nursing intervention would be most appropriate for the nurse to include in the client's plan of care at this time?

C Position her right arm below heart level. D Ask the client how she feels about having her breast removed. A Attach a sign above her bed to have BP, IV lines, and lab work in her right arm. B Encourage her to turn, cough, and deep breathe at frequent intervals.