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
[{'content': 'All are chest X-Ray features suggestive of VSD in a child, EXCEPT: \nSelect and explain. \nA. Large aoic knob, B. Increased splaying of the carina, C. Cadiomegaly, D. Pulmonary plethora', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Chest X-Ray are typically normal in small VSD. In case of large VSD the findings are: 1. Cardiomegaly 2. Pulmonary plethora 3. Increased splaying of the carina with an anlge more than 90 with left main bronchi. 4. Small aoic knob 5. Increased left atrium Ref: Essentials of Pediatric Radiology, Page - 44', 'role': 'assistant'}]