This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Radiology
[{'content': "Egg on side appearance is seen in- \nSelect and explain. \nA. Fallot's tetralogy, B. TAP VC, C. TGA, D. Ebstein's anomaly", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., TGA * Egg on side appearance is characteristic radiographic feature of transposition of great vessels (TGA).Cardiac configration* "Boot-shaped" heart (cour en sabot)Fallot\'s tetralogy* "Egg on side" heart ("egg in cup" heart)Transposition of great arteries* "Egg in cup" HeartConstrictive pericarditis* "Snowman" sign ("figure of 8, or cottage loaf" sign)Supracardiac TAPVC* "Ground - glass" appearance of lungObstructive TAPVC* "Sitting-duck" heartPersistent truncus arteriosus* "Water-bottle" or flasked shaped or money bag heartPericardial effusion, hypothyroidism* "Box-shaped" heartTricuspid atresia, Ebstein\'s anomaly* Tubular heartAddison\'s disease, emphysema* "Tear -drop" heartChronic emphysema* "Cor-triatum"Pulmonary vein obstruction* "Jug handle" appearancePrimary pulmonary hypertension* "Pentagon-shaped" heartMitral incompetence* "Triangular-shaped" heartConstrictive pericarditis', 'role': 'assistant'}]