A nurse is discussing heart failure with a group of nursing students. Which statement by a student ...

A nurse is discussing heart failure with a group of nursing students. Which statement by a student reflects an understanding of how compensatory mechanisms can compound existing problems in patients with heart failure?
 
  a. An increase in arteriolar tone to improve tissue perfusion can decrease resistance.
  b. An increase in contractility to increase cardiac output can cause pulmonary edema.
  c. When the heart rate increases to increase cardiac output, it can prevent adequate filling of the ventricles.
  d. When venous tone increases to increase ventricular filling, an increase in arterial pressure occurs.