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': 'Indicated major connector, where the patient has an extreme lingual inclination of premolars and anterior teeth, inoperable large tori: \nSelect and explain. \nA. Lingual bar., B. Labial bar., C. Lingual plate., D. Double lingual bar.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]