This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
Which is the commonest site for extrapulmonary TB? 
Select and explain. 
A. Pleura, B. Lymph node, C. Intestine, D. Meninges
B: Lymph node
Answer: B: Lymph node 
Explanation: Extrapulmonary tuberculosis is tuberculosis (TB) within a location in the body other than the lungs. This occurs in 15-20% of active cases, causing other kinds of TB. These are collectively denoted as "extrapulmonary tuberculosis". Extrapulmonary TB occurs more commonly in immunosuppressed persons and young children . Ref Harrison20th edition pg 1097