This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CVS Embryology, Subject name: Anatomy
A failure of the tricuspid leaflets to attach to the annulus fibrosus will result in which of the following? 
Select and explain. 
A. Persistent truncus aeriosus (PTA), B. Ebstein's anomaly, C. Transposition of the great aeries, D. Common ventricle
B: Ebstein's anomaly
Answer: B: Ebstein's anomaly 
Explanation: B. Failure of fusion of the tricuspid leaflets with the annulus fibrosus results in Ebstein's anomaly PTA and TOF is a defect of aoopulmonary septum.