What is the indication for the use of magnesium in cardiac arrest? Choose the correct option and select submit.
A. Shock-refractory monomorphic ventricular tachycardia
B. Pulseless ventricular tachycardia-associated torsades de pointes
C. Ventricular tachycardia associated with a normal QT interval
D. Shock-refractory ventricular fibrillation