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': 'What percentage of the infected patients will eventually develop to active TB in their lifetime? \nSelect and explain. \nA. 5%, B. 10%, C. 15%, D. 20%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Overall nearly 10% of infected persons will eventually develop active TB in their lifetime, with half of them doing so during the first year after infection. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 1342', 'role': 'assistant'}]