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
Cause for renal vein thrombosis could be -a) Membranous nephropathyb) Lupus nephritisc) Membranoproliferative glomerulonephritisd) Post streptococcal glomerulonephritise) Renal amyloidosis 
Select and explain. 
A. acd, B. ace, C. cde, D. ade
B: ace
Answer: B: ace 
Explanation: None