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': 'Following splenectomy in children, which one of the following is recommended? \nSelect and explain. \nA. Hepatitis B vaccination, B. Typhoid vaccination, C. Pneumococcat vaccination, D. Regular follow up', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]