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': 'Focal lupus nephritis in renal biopsy specimen belong to which class of SLE nephritis according to the international society of nephrology and renal pathology lassification: \nSelect and explain. \nA. Class III, B. Class IV, C. Class IV B, D. Class V', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Classification of Lupus Nephritis (International Society of Nephrology and Renal Pathology Society) Class I: Minimal Mesangial Lupus Nephritis Class II: Mesangial Proliferative Lupus Nephritis Class III: Focal Lupus Nephritis Class IV: Diffuse Lupus Nephritis Class V: Membranous Lupus Nephritis Class VI: Advanced Sclerotic Lupus Nephritis Ref:Harrison,E-18,P-2733.', 'role': 'assistant'}]