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: ENT
[{'content': 'Submandibular nodes are classified as ? \nSelect and explain. \nA. Level IA neck nodes, B. Level IB neck nodes, C. Level II neck nodes, D. Level III neck nodes', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Level 1B neck nodes Division of neck nodes according to levels Level I Submental (IA) Submandibular (IB) Level II Upper jugular Level III Mid jugular Level IV Lower jugular Level V Posterior triangle group (Spinal accessory and transverse cervical chains) Level VI Prelaryngeal Pretracheal Paratracheal Level VII Nodes of upper mediastinum", 'role': 'assistant'}]