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: Pathology
[{'content': 'Collagen affected in Osteogenesis imperfecta - \nSelect and explain. \nA. Type I, B. Type II, C. Type III, D. Type IV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Type IOsteogenesis imperfecta also known as brittle bone disease, or \'Lobstein syndrome" is a congenital bone disorder.People with OI are born with defective connective tissue, or without the ability to make it, usually because of a deficiency of Type-I collagen.', 'role': 'assistant'}]