Which one of the following factors carries the least risk of asystole when risk stratifying the patient.. Complete heart block with a narrow complex QRS

A 62-year-old man is referred from the Emergency Department with a pulse of 40 beats/min. Which one of the following factors carries the least risk of asystole when risk stratifying the patient?
A. Ventricular pause of 5 seconds
B. Recent asystole
C. Complete heart block with a narrow complex QRS***
D. Mobitz type II AV block
E. Complete heart block with a broad complex QRS
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