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 of the following statements about synovial cell sarcoma, are true, except - 
Select and explain. 
A. Originate from synovial lining, B. Occur more often at extraarticular sites, C. Usually seen in patients less than 50 years of age, D. Knee and foot are common sites involved
A: Originate from synovial lining
Answer: A: Originate from synovial lining 
Explanation: The term synovial cell sarcoma' is however a misnomer as synovial cell sarcomas do not arise from synovium.
Most synovial sarcomas are extraarticular and only less than 10% are intraarticular.