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: Orthopaedics
[{'content': 'All are true about chordoma except \nSelect and explain. \nA. Endothelial origin, B. More common in males, C. Occurs in sacrococcygeal region, D. Expansile lytic lesion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]