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: Radiology
In all of the following increased cardiac silhouette sign is seen except - 
Select and explain. 
A. Tetralogy of Fallot's, B. Pericardial effusion, C. Aortic regurgitation, D. Ebstein anomaly
A: Tetralogy of Fallot's
Answer: A: Tetralogy of Fallot's 
Explanation: Pericardial effusion, Aortic regurgitation and Ebstein anomaly cause cardiomegaly (increased cardiac silhouette).
In TOF, there is normal size cardiac silhouette.