The Nurse Is Analyzing a Patient's Electrocardiogram

The nurse is analyzing a patient's electrocardiogram.What should the nurse consider as normal for the P-R interval?

A) 0.02 to 0.04 second
B) 0.05 to 0.l0 second
C) 0.12 to 0.20 second
D) 0.21 to 0.30 second