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': 'Submental lymph nodes drains from ? \nSelect and explain. \nA. Centre of lower lips, B. Posterior 1/3 of tongue, C. Anterior 2/3 of tongue, D. Angle of mouth', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Submental lymph nodesThese lymph nodes lie on the mylohyoid in the submental triangle. The receive afferents from superficial tissue below chin, central pa of lower lip, adjoining gums, anterior pa of the floor of the mouth and tip of the tongue. These nodes, themselves, drain into (efferent) into submandibular nodes.', 'role': 'assistant'}]