This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy and physiology of bone and fracture healing, Subject name: Orthopaedics
[{'content': 'what Type of collagen is found in bone ? \nSelect and explain. \nA. Type 1, B. Type 2, C. Type 3, D. Type 4', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Type 1 collagen fibres,derived from tropocollagen molecules produced by osteoblasts,make up over 80 percent of unmineralized matrix. They form a network which emboides a mucopolysaccharide(proteoglycans)ground substance and also acts as a scaffold on which the mineral component-crystalline hydroxyapatite is deposited. ref: apley&;s textbook,9th edition page no.118', 'role': 'assistant'}]