This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nephrotic and Nephritic syndrome, Subject name: Medicine
Renal biopsy in a patient of microscopic polyangiitis (MPA) will yield which of the following findings? 
Select and explain. 
A. Subepithelial humps on electron microscopy, B. Deposits showing apple-green birefringence on polarized light, C. Pauci-immune crescentic glomerulonephritis, D. Normal renal histology
C: Pauci-immune crescentic glomerulonephritis
Answer: C: Pauci-immune crescentic glomerulonephritis 
Explanation: Option A: Feature seen in MGN Option B: Feature seen in Amyloidosis Option C: Pauci-immune crescentic glomerulonephritis