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
Most common form of glomerulonephritis worldwide is? 
Select and explain. 
A. IgA nephropathy, B. Post streptococcal glomerulonephritis, C. Rapidly progressive glomerulonephritis, D. Acute glomerulonephritis
A: IgA nephropathy
Answer: A: IgA nephropathy 
Explanation: Most Common GN - IgA nephropathy / Berger disease (MC C/F - gross Microscope Hematuria) Most Common Nephrotic overall - FSGS Most Common Nephrotic in adult - FSGS Most Common Nephrotic in Children - Minimal Changes disease Most Common Nephrotic in elderly - MGN