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
Not a testicular tumor marker - 
Select and explain. 
A. a-1 antitrypsin, B. HCG, C. Alfa feto protein, D. CA-125
D: CA-125
Answer: D: CA-125 
Explanation: Answer- D. CA-125CA-125 is an ovarian tumor marker.