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: Surgery
[{'content': 'Supraomohyoid neck dissection includes removal of: \nSelect and explain. \nA. Level I - IV Lymph nodes, B. Level II - V Lymph nodes, C. Level I - III Lymph nodes, D. Level II - IV Lymph nodes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]