This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Pathology, Subject name: Pathology
Examine the renal histopathology slide. What is the probable diagnosis? 
Select and explain. 
A. Membranoproliferative GN, B. Rapidly profilerative GN, C. Post streptococcal glomerulonephritis, D. Diabetic nephropathy
C: Post streptococcal glomerulonephritis
Answer: C: Post streptococcal glomerulonephritis 
Explanation: The presence of diffuse involvement of glomeruli and histologically showing enlarged hyper cellular glomeruli is suggestive of Acute infectious GN. It can be both infectious and non-infectious (SLE) but the most common infectious acute proliferative GN is post streptococcal GN. So, the likely answer is post streptococcal glomerulonephritis.