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 tooth supported partial denture, movement of the base\ntowards the edentulous ridge is prevented primarily by \nSelect and explain. \nA. Clasps on abutment teeth, B. Rests on abutment teeth, C. Indirect retainer on abutment teeth, D. Minor connector on abutment teeth', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]