This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
Collagen ------ forms the main pa of anchoring fibrils in epithelial tissues 
Select and explain. 
A. VII, B. IV, C. VIII, D. I
A: VII
Answer: A: VII 
Explanation: Ref: Harper&;s Biochemistry; 30th edition; Chapter 50; The Extracellular Matrix