This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Most common cardiac involvement in Rheumatoid arthritis is 
Select and explain. 
A. Conduction defects, B. Pericarditis, C. Myocarditis, D. Infective Endocarditis
B: Pericarditis
Answer: B: Pericarditis 
Explanation: (B) Pericarditis # CARDIAC COMPLICATIONS OF RHEUMATOID ARTHRITIS> Pericarditis: Asymptomatic. One-third of patients with seropositive RA.> Myocarditis.> Endocarditis.> Conduction defects.> Coronary vasculitis.> Granulomatous aortitis.