The predominant determinant of outcome for patients with pulmonary atresia and an intact ventricular septum revolves around:

A. The size of the ASD.
B. The baby's age at presentation.
C. The size of the right ventricular cavity and tricuspid valve.
D. The presence of a tricuspid as opposed to a bicuspid pulmonary valve.
E. The level of hypoxemia at presentation.

Ans: C