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 a class I RPD, resistance to the torquing forces is best provided by the \nSelect and explain. \nA. Denture base, B. Major connector, C. Minor connector, D. Occlusal rest', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]