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': 'Which of the following is not a maxillary major connector: \nSelect and explain. \nA. Closed horseshoe major connector., B. Continuous clasp., C. Palatal plate., D. None of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]