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: Physiology
Aggrecan in: 
Select and explain. 
A. Receptor over platelets, B. A molecule present in osteoid tissue, C. Granules in leukocytes, D. Impoant component of cailage
D: Impoant component of cailage
Answer: D: Impoant component of cailage 
Explanation: D i.e. Impoant component of cailage