A Slow Ventricular Heart Rate Can Be Seen in Dysrhythmias

Multiple Choice

A slow ventricular heart rate can be seen in dysrhythmias where there is a rapid atrial rate because:

A) the AV node is blocked and not all the impulses are carried through to the ventricles.
B) there is excessive sympathetic nervous system stimulation of the AV node.
C) the atria fire and bombard the AV node so rapidly that not all the impulses are conducted through to the ventricles.
D) there is excessive parasympathetic nervous system stimulation of the ventricles.