This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Concepts, Subject name: Pathology
Commonest site for spread of the cancers is: 
Select and explain. 
A. Liver, B. Lungs, C. Brain, D. LN
D: LN
Answer: D: LN 
Explanation: Sentinal Lymph Node ( gate keeper/care taker) Lymph node - Tumor cells spread First to these lymph nodes.