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
[{'content': 'Most common Tumor of spleen is \nSelect and explain. \nA. Lymphoma, B. Sarcoma, C. Hemangioma, D. Metastasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Lymphoma "Non-Hodgkin\'s lymphoma is the most common malignant neoplasm of the spleen."- Maingot\'s 11/e Primary neoplasms of spleen are a rare entity. Most common primary neoplasm of spleen is hemangioma and the most common primary malignant neoplasm is angiosarcoma.', 'role': 'assistant'}]