Which Action by a New Registered Nurse (RN)who Is Orienting

Which action by a new registered nurse (RN) who is orienting to the telemetry unit indicates a good understanding of the treatment of heart dysrhythmias?

A) Prepares defibrillator settings at 360 joules for a patient whose monitor shows asystole.
B) Injects IV adenosine (Adenocard) over 2 seconds to a patient with supraventricular tachycardia
C) Turns the synchronizer switch to the "on" position before defibrillating a patient with ventricular fibrillation
D) Gives the prescribed dose of diltiazem (Cardizem) to a patient with new-onset type II second degree AV block