What rhythm involves normal sinus rhythm (NSR) with first-degree atrioventricular (AV) block and two sinus pauses?
a. Sinus Tach w/ 1st Degree AV Block and IVCD
b. Atrial Fibrillation with PVC x3
c. NRS/ 1st Degree AV Block + 2 Sinus Pauses
d. Second Degree AV Block (Mobitz II)