What Are the Distinguishing Characteristics of Junctional Escape Rhythm

What are the distinguishing characteristics of junctional escape rhythm?

A) The rhythm is regular; the P wave may occur before, during, or after the QRS; and the P wave is inverted.
B) The rhythm is irregular, the P wave is inverted, and the P wave may immediately precede or follow the QRS complex.
C) The P wave may occur simultaneously with the T wave or may occur before, during, or after the QRS complex.
D) The P waves cannot be identified, there is chaotic electrical activity, and f waves may be seen.