This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Orthopaedics
[{'content': 'Most common true benign tumor of the bone is - \nSelect and explain. \nA. Giant cell tumor, B. Simple bone cyst, C. Osteoid osteoma, D. Enchondroma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Commonest benign tumor of bone -----osteochondroma Commonest true benign tumor of bone -----osteoid osteoma Refer Maheshwari 6th/e p 247', 'role': 'assistant'}]