What rhythm is characterized by atrial fibrillation with three premature ventricular contractions (PVCs)?
a. Sinus Rhythm w/ 1st Degree AV Block and 4 PVCs
b. Atrial Fibrillation with PVC x3
c. Junctional Tach or SVT
d. Sinus Bradycardia with IVCD and PVC x2