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: ENT
Gerlach tonsil in Waldeyer’s ring is 
Select and explain. 
A. Tubal tonsil, B. Palatine tonsil, C. Pharyngeal tonsil, D. Lingual tonsil
A: Tubal tonsil
Answer: A: Tubal tonsil 
Explanation: The tubal tonsil is one of the four main tonsil groups comprising Waldeyer's tonsillar ring, which also includes the palatine tonsils, the lingual tonsils, and the pharyngeal tonsils.