When Describing the Rationale for Connecting Electrodes to Each Limb

When describing the rationale for connecting electrodes to each limb and around the heart,the nurse shares with the patient which appropriate explanation?

A) The leads view a specific portion of the heart's surface to help determine which part has sustained damage.
B) Multiple leads are necessary to provide a three-dimensional view of the heart.
C) The electrodes are necessary to provide a shock to the heart if needed during cardiac conversion.
D) The limb electrodes are required to provide a backup study in the event of artifact.