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
A 60-year-old woman presents with generalized edema, skin ulceration and hypeension. Urine examination shows subnephrotic proteinuria 
Select and explain. 
A. Post-streptococcal Glomerulonephritis, B. Essential Mixed Cryoglobulinemia, C. Membranoproliferative Glomerulonephritis (MPGN), D. Focal SegmentalGlomerulosclerosis (FSGS)
B: Essential Mixed Cryoglobulinemia
Answer: B: Essential Mixed Cryoglobulinemia 
Explanation: Answer is B > C (Essential mixed cryoglobulinemia): The presence of skin ulceration on clinical examination in a female patient around the 6th decade ors a diagnosis of Essential Mixed Cryoglobulinemia over MPGN. Neveheless if Essential Mixed Cryoglobulinemia were not amongst the options MPGN would be the single best answer of choice. Membranoproliferative glomerulonephritis is a responsible for 80% of all renal lesions in essential mixed cryoglobulinemia.