This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
[{'content': 'Tonsillar fossa is bounded anteriorly by \nSelect and explain. \nA. Pharyngobasilar fascia, B. Palatopharyngeal fold, C. Buccopharyngeal fascia, D. Palatoglossal fold', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Tonsilar fossa is bounded by Anterior - Palatoglossal fold containing palatoglossal muscle Posterior - Palatopharyngeal fold containing palato pharyngeal muscle Apex - Soft palate, where both arches meet Base - Dorsal surface of posterior one-third of tongue. (Ref: Anatomy of head, neck and brain. Vishram Singh. P 227 )', 'role': 'assistant'}]