This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Radiology
Pulmonary Plethora is seen in - 
Select and explain. 
A. TOF, B. TAPVC, C. CoA, D. Tricuspid Atresia
B: TAPVC
Answer: B: TAPVC 
Explanation: Pulmonary plethora It is a term used to describe the appearances of increased pulmonary perfusion on chest radiographs. It may occur in several situations : Total anomalous pulmonary venous return (TAPVC) Left-to-right cardiac shunts (e.g. ASD, VSD, PDA) Truncus Aeriosus Vein of Galen Malformation Transposition of the Great Aeries It may also been seen in pregnancy due to increased cardiac output.