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 is a T cell tumor? 
Select and explain. 
A. Burkitt's lymphoma, B. Mycosis fungiodes, C. Mantel cell Leukemia, D. Hairy cell Leukemia
B: Mycosis fungiodes
Answer: B: Mycosis fungiodes 
Explanation: None