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
What percentage of the infected patients will eventually develop to active TB in their lifetime? 
Select and explain. 
A. 5%, B. 10%, C. 15%, D. 20%
B: 10%
Answer: B: 10% 
Explanation: 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