This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular Radiology, Subject name: Radiology
[{'content': 'Right hea border on CXR is formed by all except? \nSelect and explain. \nA. SVC, B. Right atrium, C. IVC, D. Right ventricle', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Borders of the hea : Right hea border: Superior Vena Cava Rt atrium Inferior vena cava Left Hea Border: Aoic knuckle Pulmonary conus Left auricle Left ventricle', 'role': 'assistant'}]