The Absolute Refractory Period Begins with the Onset of the _____

Multiple Choice

The absolute refractory period begins with the onset of the _____ and terminates _____.

A) P wave; with the end of the QRS complex
B) QRS complex; at approximately the apex of the T wave
C) QRS complex; with the end of the T wave
D) P wave; with the beginning of the QRS complex