A Nurse Is to Change the Needleless Injection Cap of a Multiple-Lumen

A nurse is to change the needleless injection cap of a multiple-lumen central line. Which techniques should be used by the nurse to change the injection cap?

A) Hold the connector above the client's heart and change the cap.
B) Hold the connector below the client's heart and change the cap.
C) Hold the connector below the client's heart, clamp, and change the cap.
D) Hold the connector above the client's heart, have the client hold his or her arms up, and change the cap.