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
All are true about chordoma except 
Select and explain. 
A. Endothelial origin, B. More common in males, C. Occurs in sacrococcygeal region, D. Expansile lytic lesion
A: Endothelial origin
Answer: A: Endothelial origin 
Explanation: None