This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oncology, Subject name: Surgery
[{'content': "All of the following are true about lymph node metastasis except? \nSelect and explain. \nA. Delphian:-Pretracheal, B. Virchow's node:- Left Supraclavicular LN, C. Rotter's :- retropharyngeal lymph node, D. Sister Mary Joseph nodule:- not a lymph node cutaneous metastatic deposit around umbilicus", 'role': 'user'}, {'content': "Answer: C \nExplanation: Impoant Lymph nodes Rotter's nodes - Interpectoral nodes (CA breast) Rouvier Nodes - Retropharyngeal Nodes (CA Nasopharynx) Delphian nodes - Pre-Cricoid / pre-tracheal / Pre-laryngeal lymph nodes Irish nodes - Nodes in left axilla (CA stomach) Sister Mary joseph nodes - Periumbilical metastatic cutaneous nodules Virchow nodes - Left supraclavicular node Cloquet node - Femoral canal node LN of Lund - Cystic lymph node Krouse lymph node - jugular fossa lymph node", 'role': 'assistant'}]