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': 'Which of the following are a triad of the sign and\nsymptoms of osteogenesis imperfecta \nSelect and explain. \nA. blue sclera, sparse hair, anhydrosis, B. enlarged hand, feet, maxilla, mandible, C. blue sclera, brittle bones, opalescent dentin, D. blue sclera, arachnodactyly, brittle bones', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]