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
[{'content': 'Commonest site for spread of the cancers is: \nSelect and explain. \nA. Liver, B. Lungs, C. Brain, D. LN', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sentinal Lymph Node ( gate keeper/care taker) Lymph node - Tumor cells spread First to these lymph nodes.', 'role': 'assistant'}]