This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bone Tumour, Subject name: Orthopaedics
[{'content': 'Which of the following is the most frequent tumor of the bone in the hand: \nSelect and explain. \nA. Hemangioma, B. Enchondroma, C. Ganglion cyst of the bone, D. Synovioma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. EnchondromaBenign tumors of mature hyaline cartilage are usually located centrally in bone and are known as enchondromas, this is the most frequent tumor of the bone of the hand, this rarely exhibits aggressive behavior and is sometimes referred to as cartilaginous hamartoma.', 'role': 'assistant'}]