This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Squamous cell carcinoma spreads commonly \nSelect and explain. \nA. Implantation, B. Hematogenous spread, C. Lymphatic spread, D. Trancoelomic spread', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In SCC, when deep invasion leads to eventual metastasis.Local and regional lymph nodes are the most common sites of metastasis.AJCC 8E pg: 171', 'role': 'assistant'}]