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': 'Level V cervical nodes includes: September 2007 \nSelect and explain. \nA. Upper jugular nodes, B. Middle jugular nodes, C. Lower jugular nodes, D. Posterior triangle nodes', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: Posterior triangle nodes Location of cervical nodes may be divided as follows: Level I: Submental and submandibular nodes - Level Ia: Submental triangle - Level Ib: Submandibular triangle Level II: Upper jugular/cervical nodes Level III : Middle jugular/cervical nodes Level IV: Lower jugular/cervical nodes', 'role': 'assistant'}]