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: Medicine
[{'content': 'Rowel-Jolly bodies may be seen after- \nSelect and explain. \nA. hepatectomy, B. Splenectomy, C. Pancreatectomy, D. Cholecystectomy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]