This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Lupus Erythematous, Subject name: Medicine
[{'content': 'Which is the most common presentation of cardiac lupus? \nSelect and explain. \nA. Myocarditis, B. Pericarditis, C. Aoic regurgitation, D. Libman sacks endocarditis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pericarditis is the most common cardiac abnormality in SLE Echocardiography is a sensitive and specific technique in detecting cardiac abnormalities, paicularly mild pericarditis, valvular lesions and myocardial dysfunction- should be performed periodically in SLE patients. Vascular occlusion, including coronary aeries, may develop due to vasculitis, premature atherosclerosis or anti-phospholipid antibodies associated with SLE. Premature atherosclerosis is the most frequent cause of coronary aery disease (CAD) in SLE patients.', 'role': 'assistant'}]