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': 'Most frequent benign bone tumor of hand is - \nSelect and explain. \nA. Enchondroma, B. Osteochondroma, C. Chondrosarcoma, D. Glomus tumor', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Enchondroma Important facts* Commonest bone malignancies Secondaries (metastases)* Commonest primary malignant tumor-Multiple myeloma* Commonest primary malignant tumor o long bones-Osteosarcoma* Commonest benign tumor of bonne-Osteochondroma(Osteochondroma is not ture neoplasm since its growth stops with cessation of growth at the epiphyseal plate)* Commonest true benign tumor of bone-Osteroid osteoma* Commonest benign tumor of hand-Enchondroma", 'role': 'assistant'}]