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: Medicine
[{'content': 'High risk lesions for Infective Endocarditis are all except:- \nSelect and explain. \nA. Prosthetic heart valves, B. Prior history of infective endocarditis, C. Aortic regurgitation, D. Complex cyanotic congenital heart disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: High risk lesions for IE requiring antibiotic prophylaxis for surgical procedures:-\xa0\ni. Prosthetic heart valves.\nii. Prior endocarditis.\niii.\xa0Unrepaired cyanotic congenital heart disease(CCHD).\niv. Completely repaired CCHD during the 6 months after repair.\nv.\xa0Incompletely repaired CCHD with residual defects - Valvulopathy developing after cardiac transplantation.', 'role': 'assistant'}]