This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'OPSI is related to \nSelect and explain. \nA. Kidney, B. Brain, C. Lung, D. Spleen', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Overwhelming post splenectomized infection (OPSI) is seen in patient&;s who have undergone splenectomy. post splenectomized patients are more prone to infections with pneumococcal septicaemia, Neisseria meningitides, H influenza, Babesia microfti And can occur any time after splenectomy SRB 5 the edition page no.677', 'role': 'assistant'}]