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: Radiology
[{'content': 'Molten - wax appearance is seen in – \nSelect and explain. \nA. Osteoporosis, B. Osteopoikilosis, C. Melorheostosis, D. Osteogenesis imperfecta', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Molten was appearance is seen in melorheostosis.', 'role': 'assistant'}]