This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
All of the following statements is/are true about post streptococcal glomerulonephritis except - 
Select and explain. 
A. Early treatment of streptococcal pharyngitis prevents glomerulonephritis, B. All cases of streptococcal infection lead to glomerulonephritis, C. Hump sign may be present, D. Immune complex deposits are seen
B: All cases of streptococcal infection lead to glomerulonephritis
Answer: B: All cases of streptococcal infection lead to glomerulonephritis 
Explanation: Only ceain strains of group A Beta-hemolytic streptococci are nephritogenic, more than 90% of cases been traced to types 12,4 & 1, which can be identified by typing of M protein of cell wall. Electron microscopy shows deposited immune complexes arrayed as subendothelial, intramembranous, or most often, subepithelial 'humps' nestled against the GBM. Ref: Pathologic basis of disease ROBBINS 8th edition, pg no:917 & ROBBINS basic pathology 9th edition, pg no:529