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': 'Montoux test is \nSelect and explain. \nA. Diagnostic test for TB, B. False positive reaction seen in  immunocompromised, C. Highly sensitive test and low specificity, D. Boosting is maximum after 4 weeks of initial test', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mantoux test is screening test for latent TB infection.\nIt has low sensitivity and specificity.\nFalse positive reaction\xa0 - occur with BCG vaccination and False negative reactions - occur\xa0in immunocompromised individual.\nIncrease in induration (Boosting) is seen between 1 - 5 weeks after intial test.', 'role': 'assistant'}]