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
[{'content': "Defect in collagen formation is seen in: \nSelect and explain. \nA. Scurvy, B. Hunter's syndrome, C. Marfan's syndrome, D. All", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Scurvy Collagen show triple helixQ and is never present free inside the cytoplasmQ. Scurvy, osteogenesis imperfectaQ, Ehler - Danlos syndrome & Alpo syndrome occurs d/t its deficient synthesis.', 'role': 'assistant'}]