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: Surgery
What is the most common malignancy affecting spleen - 
Select and explain. 
A. Angiosarcoma, B. Hamartoma, C. Secondaries, D. Lymphoma
D: Lymphoma
Answer: D: Lymphoma 
Explanation: None