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': 'In case of the maxillary arch, if the torus is present, but must not be removed, which of the following major connector should be indicated: \nSelect and explain. \nA. Horseshoe., B. Closed horseshoe., C. Anteroposterior palatal bar., D. All of the above.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]