This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Delphian's nodes are NOT RELATED - ENT 
Select and explain. 
A. Pre-Larynxgeal, B. Upper deep cervical, C. Retropharyngeal, D. Posterior triangle
A: Pre-Larynxgeal
Answer: A: Pre-Larynxgeal 
Explanation: .