This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
Most common extra pulmonary involvement of TB ? 
Select and explain. 
A. Bone, B. Lymph nodes, C. Pleura, D. Ileocecal
B: Lymph nodes
Answer: B: Lymph nodes 
Explanation: Most common extra pulmonary involvement: lymph nodes > pleura> ileocecal - GI TB most common site- ileocecal