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': 'Bracing of RPD framework can be best obtained by: \nSelect and explain. \nA. Rigid reciprocal arm of the clasp, B. Rigid reciprocal arm and body of clasp, C. Rigid reciprocal arm and flexible part of the retentive arm of the clasp, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]