To Effectively Care for Patients with Heart Disease, the Staff

To effectively care for patients with heart disease, the staff development nurse is teaching new nurses hired for the intensive care unit about the Frank-Starling law. Which concept will the instructor teach?

A) Increasing preload causes an increase in left ventricular contractility.
B) Increasing preload causes a decrease in left ventricular contractility.
C) Increasing afterload causes a decrease in left ventricular contractility.
D) Increasing afterload causes an increase in left ventricular contractility.