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
Which of the following is not a tumor marker 
Select and explain. 
A. Tyrosinase, B. Human leucocyte antigen A2, C. AFP, D. All
B: Human leucocyte antigen A2
Answer: B: Human leucocyte antigen A2 
Explanation: Ans. is 'b' i.e., Human leucocyte antigen A2