Which of the Following Sentences Correctly Describes the EKG Findings

Multiple Choice

Which of the following sentences correctly describes the EKG findings of second-degree AV block, Wenckebach?

A) No relationship between P wave and QRS complex
B) Progressive lengthening of PR interval followed by a P wave without an associated QRS complex
C) Prolonged PR interval with narrow QRS complex
D) Prolonged PR interval with wide QRS complex