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: Unknown
PSGN is - 
Select and explain. 
A. Dense deposit disease, B. Rapidly progressive glomerulosclerosis, C. Nephrotic syndrome, D. Nephritic syndrome
D: Nephritic syndrome
Answer: D: Nephritic syndrome 
Explanation: Ans. is 'd' i.e., Nephritic syndrome Causes of Acute Nephritic SyndromeI. Primary GlomerulonephritisII. Sy stemic Disease1. Acute GNi) Post-streptococcalii) Non-streptococcal1. SLE2. Polyarteritis nodosa3. Wegener's granulomatosis4. Henoch-Schonlein purpura5. Cryoglobulinemia2. Rapidly progressive GN3. Membranoprol iferati ve GN4. Focal GN5. IgA nephropathy