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
Level V Lymph nodes include: 
Select and explain. 
A. Pretracheal & Prelaryngeal  lymph nodes, B. Mediastinal lymph nodes, C. Lower juglar lymph nodes, D. Posterior triangular lymph nodes
D: Posterior triangular lymph nodes
Answer: D: Posterior triangular lymph nodes 
Explanation: Level IA: Submental
Level IB: Submandibular
Level II: Upper juglar
Level III: Middle juglar
Level IV: Lower juglar
Level V: Posterior triangle lymph nodes
Level VI: Central
Level VII: Mediastinal.