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: Medicine
Most common manifestation of cardiac lupus is- 
Select and explain. 
A. Pericarditis, B. Myocarditis, C. Libman-Sacks endocarditis, D. Aoic regurgitation
A: Pericarditis
Answer: A: Pericarditis 
Explanation: the most common manifestation of cardiac lupus is pericardial inflammation or pericarditis Pericarditis. Pericarditis is the most common hea problem associated with active lupus and occurs in about 25% of people with SLE. The condition occurs when the pericardium--the thin membrane surrounding your hea--becomes swollen and irritated, causing it to leak fluid around the hea. Ref Davidson 23rd edtion pg 470