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: Pathology
[{'content': 'Cytogenetics for synovial cell sarcoma \nSelect and explain. \nA. t (9,22), B. t (11,14), C. t (8,14), D. t (x,18)', 'role': 'user'}, {'content': 'Answer: D \nExplanation: t (x,18) is seen in synovial cell sarcoma and it produces fusion genes like SS18-SSXl-SSX2-SSX4', 'role': 'assistant'}]