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: Pathology
Most common site for non-Hodgkins lymphoma outside the lymph nodes is - 
Select and explain. 
A. Liver, B. Spleen, C. Stomach, D. Brain
C: Stomach
Answer: C: Stomach 
Explanation: Although extra-nodal lymphomas can arise in virtually any tissue, they do so most commonly in the GI tract, particularly stomach.