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: Dental
[{'content': 'Palatopharyngeal incompetence is treated by? \nSelect and explain. \nA. Palatal lift prosthesis, B. Obturator prosthesis, C. Pharyngeal speech prosthesis, D. Pharyngeal bulb prosthesis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]