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: Pathology
Which of the following statement is not true about glomerular basement membrane? 
Select and explain. 
A. Type III collagen is present, B. Glomerular basement membrane is stained with PAS, C. Glomerular basement membrane acts as filtration barrier, D. Glomerular basement membrane is involved in charge dependent filtration
A: Type III collagen is present
Answer: A: Type III collagen is present 
Explanation: Ans. a. Type III collagen is present Type IV collagens (not the type HI collagen) are the main components of the basement membrane, together with laminin."The basement membrane is synthesized by contributions from the overlying epithelium and underlying mesenchymal cells, forming a flat lamellar "chicken wire" mesh (although labeled as a membrane; it is quite porous). The major constituents are amorphous nonfibrillar type IV collagen and lantinin." '"Type IV collagens have long but interrupted triple-helical domains and form sheets instead of fibrils; they are the main components of the basement membrane, together with laminin