This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Anatomy
[{'content': 'Solid and largest lymphatic organ of the body is \nSelect and explain. \nA. Spleen, B. Thymus, C. Lymph node, D. Liver', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Spleen# Largest lymphatic organ in the human body is the spleen.> Primary function of the spleen is to purify the blood and store blood cells. It helps the immune system identify and combat foreign antibodies.> The spleen consists of white pulp and red pulp. The white pulp generates blood cells and synthesizes antibodies, and the red pulp removes old blood cells and filters the blood.', 'role': 'assistant'}]