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
Node of Rouviere is 
Select and explain. 
A. Retropharyngeal, B. Pharyngeal, C. Nasopharyngeal, D. Retromolar trigone
A: Retropharyngeal
Answer: A: Retropharyngeal 
Explanation: Ref: Various articles & internet sources
Node of Rouviere is the most superior of the lateral group of the retropharyngeal lymph nodes. It is found at the base of the skull. They represent one of the first echelon lymphnodes typically involved in nasopharyngeal carcinoma (NPC).