This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spleen, Subject name: Surgery
[{'content': 'Most common tumor of spleen is: \nSelect and explain. \nA. Lymphoma, B. Sarcoma, C. Hemangioma, D. Metastasis', 'role': 'user'}, {'content': "Answer: A \nExplanation: MC neoplasm of spleen: Lymphoma (Non-Hodgkin's lymphoma) MC primary tumor of spleen: Hemangioma MC primary malignant tumor of spleen: Angiosarcoma (Hemangiosarcoma)", 'role': 'assistant'}]