Which feature best describes a first-degree AV block on telemetry?

Which feature best describes a first-degree AV block on telemetry?

• A. Irregular PR interval with occasional dropped QRS.
• B. Prolonged QRS duration with delta waves.
• C. Prolonged PR interval (>0.20 seconds) with all P waves followed by a QRS; rate usually 60-100 bpm.
• D. No discernible P waves with wide QRS.

Answer: (C)