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: Unknown
[{'content': 'Which si true regarding Torus tubaris? \nSelect and explain. \nA. Nasopharyngeal bursitis, B. Most common site of carcinoma nasopharynx, C. Tubal elevation in lateral wall of nasopharynx, D. Gives rise to Rathke’s pouch', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref. Diseases of Ear, Nose and Throat. Pg 239\n\xa0\nTorus tubarius\xa0or\xa0cushion of the auditory canal\xa0is a mucosal elevation in the lateral aspect of the\xa0nasopharynx, formed by the underlying pharyngeal end of the cartilaginous portion of the\xa0Eustachian tube.\n\nThe opening of the Eustachian tube is anterior to the torus tobarius.\nImmediately posterior to the torus tubarius is the\xa0fossa of Rosenmuller.\xa0\xa0\n\nFrom the inferior aspect of the torus tubarius, two mucosal folds extend inferiorly:\n\nanterior fold: the\xa0salpingiopalatine fold, which overlies salpingopalatine muscle fibres\nposterior fold:\xa0salpingopharyngeal fold, which overlies the\xa0salpingopharyngeus muscle\n\nAnatomy Image', 'role': 'assistant'}]