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 malignancy is associated with underlying progression and spreads characteristically in a stepwise fashion and hence staging the disease is an important prognostic factor? 
Select and explain. 
A. Hodgkin's lymphoma, B. Multiple myeloma, C. Mature T cell NHL, D. Mature B cell NHL
A: Hodgkin's lymphoma
Answer: A: Hodgkin's lymphoma 
Explanation: None