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
[{'content': 'The Tongue: \nSelect and explain. \nA. Separated from the epiglottis by glossoepiglottic folds, B. Contains foramen caecum which is present on the dorsum of frenulum, C. Contains 6 — 10 circumvallate papilla located posterior to sulcus terminals, D. Embryologically derives from 1st branchial arch only', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]