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: Medicine
All are true for Philadelphia chromosome, EXCEPT 
Select and explain. 
A. Acquired genetic defect, B. Seen in plasma cell tumors, C. It is a marker of CML, D. Translocation of chromosome from 22 to Ch. 9
B: Seen in plasma cell tumors
Answer: B: Seen in plasma cell tumors 
Explanation: None