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': 'Indirect retention for a partial denture is achieved from which one of the following? \nSelect and explain. \nA. Lingual bar, B. Lingual plate, C. Palatal bar, D. Double palatal bar', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]