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
Which collagen produces sheets? 
Select and explain. 
A. I, B. II, C. IV, D. VI
C: IV
Answer: C: IV 
Explanation: The quaer stagerred triple helical structure of collagen is resposible for its tensile strength. Different arrangements of collagen fibrils in tissues are seen.Parallel bundles in tendons and layered at many angles in skin. REFERENCE : DM VASUDEVAN TEXTBOOK SEVENTH EDITION ; PAGE NO :39