The Fact That an Increase in End-Diastolic Ventricular Volume Increases

The fact that an increase in end-diastolic ventricular volume increases the stroke volume of the heart is an illustration of the

A) influence of the parasympathetic nervous system on cardiac output.
B) Frank-Starling law of the heart.
C) influence of atrioventricular node on cardiac output.
D) influence of blood pressure on cardiac output.