A nurse is providing preoperative teaching to a client about promoting circulation during the postoperative period. Which of the following instructions should the nurse include?

A. The incentive spirometer should be used more frequently (every 1-2 hours) to promote lung expansion and reduce the risk of pneumonia. B. Bed rest should be minimized to promote circulation and reduce the risk of deep vein thrombosis (DVT). C. Range-of-motion exercises improve circulation, prevent joint stiffness, and promote overall mobility. D. Placing a pillow under the knees can interfere with circulation and promote flexion contractures.