This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: ENT
[{'content': 'Rhinolalia clausa occurs in all except \nSelect and explain. \nA. Nasopharyngeal polyp, B. Nasopharyngeal carcinoma, C. Cleft palate, D. Nasopharyngeal angiofibroma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Rhinolalia clausa- Abnormal speech due to obstruction in nose Hyponasal speech Causes: Nasopharyngeal polyp Nasopharyngeal cancer Nasopharyngeal angiofibroma, adenoids Rhinolalia apea Abnormal nasal resonance Hypernasal speech Causes Cleft palate Velopharyngeal insufficiency Congenital sho soft palate', 'role': 'assistant'}]