This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Unequal division of conus cordis resulting from displacement of conotruncal septum gives rise to : 
Select and explain. 
A. Persistent truncus arterisur, B. Coarctation of aorta, C. Tetralogy of fallot, D. Transposition of great vessels
C: Tetralogy of fallot
Answer: C: Tetralogy of fallot 
Explanation: Unequal division of conotruncal division of conotruncal septum leads to :

Pulmonary stenosis over riding of aorta.
Pulmonary stenosis leads to right ventricular hypertrophy.
Right ventricular hypertrophy leads to ventriculor sepral defect.