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
[{'content': 'The commonest valvular lesion in SLE-related cardiac disease is- \nSelect and explain. \nA. Tricuspid regurgitation, B. Mitral regurgitation, C. Mitral stenosis, D. Aoic regurgitation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Valvular involvement is the most encountered form of hea disease in systemic lupus erythematosus (SLE). Immunoglobulin and complement deposition in the valvular structure will subsequently lead to Libman-Sacks vegetations, valve thickening, and valve regurgitation. Valvular stenosis is rarely seen.resulting in mitral regurgitation Ref Davidson 23rd edition pg 455', 'role': 'assistant'}]