This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Provisional matrix is made up of- \nSelect and explain. \nA. Fibrin, B. Fibronectin, C. Fibrinogen, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: in secondary healing a provisional matrix containing fibrin, plasma fibronectin, and type III collagen is formed in about 2 weeks this is replaced by a matrix composed primarily of type I collagen ref robbins 9th ed page 108', 'role': 'assistant'}]