Identify the electrical events associated with a normal electrocardiogram.
A) P wave represents atrial depolarization, QRS complex represents ventricular depolarization, and T wave represents ventricular repolarization. B) P wave represents ventricular depolarization, QRS complex represents atrial depolarization, and T wave represents atrial repolarization. C) P wave represents ventricular repolarization, QRS complex represents atrial depolarization, and T wave represents ventricular depolarization. D) P wave represents atrial depolarization, QRS complex represents atrial repolarization, and T wave represents ventricular depolarization.