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
Reactivation of TB affects 
Select and explain. 
A. Anterior segment of upper Lobe, B. Apical and posterior segments of  upper Lobe, C. Posterior segments of  lower Lobe, D. Posterior and inferior segments of lower lobe
B: Apical and posterior segments of  upper Lobe
Answer: B: Apical and posterior segments of  upper Lobe 
Explanation: Reactivation of TB tends to involve apical and  posterior segments of  upper Lobe and Superior segments of lower lobe.