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': 'Which of the following is level III lymph nodes? \nSelect and explain. \nA. Central, B. Apical, C. Interpectoral, D. Anterior', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Apical also known as subclavicular is level III lymph node.', 'role': 'assistant'}]