The Health Care Provider Performs a Bone Marrow Aspiration from the Left

The health care provider performs a bone marrow aspiration from the left posterior iliac crest on a patient with pancytopenia. Following the procedure, the nurse should

A) elevate the head of the bed to 45 degrees.
B) apply a sterile Band-Aid at the aspiration site.
C) use half-inch sterile gauze to pack the wound.
D) have the patient lie on the left side for an hour.