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: Anatomy
[{'content': 'Tip of tongue drains inot - \nSelect and explain. \nA. Occipital lymph node, B. Submental lymph node, C. Deep cervical lymph nodes, D. Tonsillar lymph nodes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Submental lymphnode', 'role': 'assistant'}]