This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head & Neck, Subject name: Pathology
[{'content': 'Olliers disease also known as? \nSelect and explain. \nA. Osteosarcoma, B. Enchondromatosis, C. Multiple myeloma, D. Enchondrosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Enchondromatosis(Ref: Robbins 9th/pg)Ollier disease is a rare, non inherited disease of unknown cause characterized by multiple enchondromas.', 'role': 'assistant'}]