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 patient presented with haematuria with acute renal failure. On doing renal biopsy, it showed cresentric glomerulonephritis. Immunofluoresence findings showed C3 & IgG deposition. Most likely diagnosis among the following is? 
Select and explain. 
A. Membranous glomerulonephritis, B. Minimal change disease, C. Monoclonal deposition disease, D. Acute post-infectious glomerulonephritis
D: Acute post-infectious glomerulonephritis
Answer: D: Acute post-infectious glomerulonephritis 
Explanation: Answer- D. Acute post-infectious glomerulonephritisPSGN appears 1 to 4 weeks after infection of pharynx or skin by specific nephritogenic strains (12, 4 and 1) of group A beta hemolytic streptococci.The lesions are caused by Type III hypersensitivity reaction with immune complex deposition and complement activation, causing decreased complement level.Clinical features-HematuriaOliguria, Non-selective proteinuriaPSGN causes acute renal failure.By immunofluorescence microscopy, there are irregular granular deposits of IgG. IgM and C3 in the mesangium and along the basement membrane (starry sky appearance).