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
[{'content': 'Gerlach tonsil in Waldeyer’s ring is \nSelect and explain. \nA. Tubal tonsil, B. Palatine tonsil, C. Pharyngeal tonsil, D. Lingual tonsil', 'role': 'user'}, {'content': "Answer: A \nExplanation: 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.", 'role': 'assistant'}]