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
The tonsillar ring or Waldeyer's ring consists of which of the following: 
Select and explain. 
A. The adenoid, B. The lingual tonsil, C. The tonsil, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None