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': 'A 60-year-old woman presents with generalized edema, skin ulceration and hypertension. Urine examination shows subnephrotic proteinuria (<2gm) and microscopic haematuria. Serum complement levels are decreased and she is positive for anti-hepatitis c antibodies. The likely diagnosis is - \nSelect and explain. \nA. PSGN, B. Essential mixed cryoglobulinemia, C. Membrano proliferative glomerulonephritis, D. Focal segmental glomerulosclerosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]