When Ventricular Function Curves Are Performed on a Patient with a Suspected

When ventricular function curves are performed on a patient with a suspected failing right ventricle, how does cardiac output typically change as central venous pressure increases?

A) Cardiac output increases at first and then stays flat.
B) Cardiac output increases at first and then decreases.
C) Cardiac output decreases at first and then stays flat.
D) Cardiac output decreases at first and then increases.